2x EDUCTORS & NO MORE POWERHEADS!! - Page 2

sfsuphysics · 04/19/2007, 09:00 AM

yeah I got the locline blues too, of course it'd be nice if the threaded piece could fit on either side.

ivgonmad · 04/20/2007, 08:58 AM

bump...

thriceanangel · 04/20/2007, 12:54 PM

I wonder what would happen if you put one of these on a maxi mod?

ivgonmad · 04/20/2007, 05:56 PM

You could maybe replace the maxi mod with one of these on the outlet nozzle of the powerhead.

JCTewks · 04/20/2007, 11:23 PM

you could try...but eductors are meant for pressure pumps, which a maxi jet is definitely not.

OZreefhead · 04/21/2007, 03:47 AM

haha very nice idea, and the flow increase looks great on your vid, but it;s hard to understand all the parts ur using since ur from the US. I'll try to interprate anyway

thnx

OZreefhead · 04/21/2007, 03:50 AM

oh and another thing if u put a SWCD on my CL pump which decreases flow by 20% then used 2 eductors on the outlets would i gain the 20% or even more back??

ivgonmad · 04/21/2007, 10:54 AM

Quote:

Originally posted by JCTewks
you could try...but eductors are meant for pressure pumps, which a maxi jet is definitely not.

Like I said in the first page of the thread, these eductor do not require as much pressure from the pump as the commercially available versions but I would still only try with a MJ 1200, if you need less water movement than a MJ1200 can deliver then you don't need eductors.

Quote:

Originally posted by OZreefhead
oh and another thing if u put a SWCD on my CL pump which decreases flow by 20% then used 2 eductors on the outlets would i gain the 20% or even more back??

Yup, thats what should happen

, you should have a gain of at least 2x the flow.

tkeracer619 · 04/21/2007, 11:35 AM

This is pretty cool. I am going to give it a try to see how it works with my dart and OM

OZreefhead · 04/21/2007, 09:40 PM

thats awsome; No more expensive OM wavemaker

yay thnx heaps

ivgonmad · 04/21/2007, 11:29 PM

Glad its working for you guys!!

ivgonmad · 04/21/2007, 11:33 PM

Quote:

Originally posted by OZreefhead
thats awsome; No more expensive OM wavemaker

yay thnx heaps

Did you use the parts I used? Can u get pics of your eductor I am just curious of how you made it if it is different from mine.

zeusfc · 04/22/2007, 12:28 AM

Nice piece of work... I've been looking at doing something similar, using a 3/4" thread to 3/8" hose barb to "pinch" the flow before the vacuum area... these look far easier!

but, does anyone know how these things can be made "nenny-safe"? I was looking at doing just one suction inlet, and taking the feed from my behind my wier, but if there's an easier way...

ivgonmad · 04/22/2007, 12:44 AM

If you go down to 3/8" hose barb you will definitely need a high pressure pump to get the same results.

You could always make a series of tiny 1/4" holes instead of the 1/2" holes. That should make it pretty safe for 'nems.

ivgonmad · 04/22/2007, 12:45 AM

Quote:

Originally posted by tkeracer619
This is pretty cool. I am going to give it a try to see how it works with my dart and OM

Please post your results

marino420td · 04/22/2007, 10:37 AM

I am having a hard time following your drawings in the other thread. Could you (or someone) post picturs of the individual parts and the construction process?

I don't mean to be a pain but I really want to try this. Thanks.

fat-tony · 04/22/2007, 10:45 AM

http://www.reefcentral.com/forums/sh...t=scwd+finally

hmm, wonder how it would work on my scwd

marcrunner · 04/22/2007, 11:00 AM

are 1/2" eductors available anywhere?

chris wright · 04/23/2007, 01:27 AM

ivgonmad,

can you post some pictures of the actual parts that you have used. Ive seen similar fittings, but im not sure of a couple of the drawings. Most of the fittings I have found have a nut for tighening, So im trying to find a way to vary your design to suit whats available in Australia.

Any help would be good. Its a great idea, so im going to give it a go if I can find the parts. Thanks mate.

OZreefhead · 04/23/2007, 01:34 AM

havnt made it yet but i showed dad all the pieces u stated and he said he could get them no worries- since he is a plumber lol- as soon as i make one i will post pics.

ivgonmad · 04/23/2007, 02:09 AM

oops...

ivgonmad · 04/23/2007, 02:18 AM

Quote:

Originally posted by marino420td
I am having a hard time following your drawings in the other thread. Could you (or someone) post picturs of the individual parts and the construction process?

I don't mean to be a pain but I really want to try this. Thanks.

Yes I will do that soon.

Quote:

Originally posted by fat-tony
http://www.reefcentral.com/forums/sh...t=scwd+finally

hmmm, wonder how it would work on my scwd

Should work better than a 2 outlet manifold with constant and equal pressure.

The alternating effect the SCWD generates between the two return lines causes the pressure to rise and drop between the two lines so at moments your eductors will put out a huge amount of flow and the eductor will be highly efficient.

When the pressure switches to the other eductor, the first one will lose pressure and therefore the firs eductor will lose effectiveness but the eductor on the other side will be working very efficiently with the gained pressure.

So, if you can imagine, you will have strong alternating bursts of flow coming from each eductor which should give you a very nice back and forth wave movement

Quote:

Originally posted by marcrunner
are 1/2" eductors available anywhere?

Commercial eductors are available as small as 3/4" as far as I know.

Quote:

Originally posted by chris wright
ivgonmad,

can you post some pictures of the actual parts that you have used. Ive seen similar fittings, but im not sure of a couple of the drawings. Most of the fittings I have found have a nut for tighening, So im trying to find a way to vary your design to suit whats available in Australia.

Any help would be good. Its a great idea, so im going to give it a go if I can find the parts. Thanks mate.

Yup, will do.

Quote:

Originally posted by OZreefhead
havnt made it yet but i showed dad all the pieces u stated and he said he could get them no worries- since he is a plumber lol- as soon as i make one i will post pics.

Awesome, please post pics and part numbers for all those in Australia.

ivgonmad · 04/23/2007, 02:24 AM

I guess I can just post the whole thing here....

Here ya go!!!

ivgonmad · 04/23/2007, 02:28 AM

This is a re-post from another forum so ignore the initial explanation....

Anybody ever use an Eductor on their return outlet?

They are supposed to increase water movement by 2x-5x.

Just made me a couple out of 1.5" Black PVC and they seem to work way too good . I have sand dunes moving all around my 90g tank, before I just had two 500gph returns that made a very low amount of flow. With the eductors it is a lot better, seems like at least a 3x increase in flow (~1500gph per outlet) and it gave me a widely dispersed flow from the return instead of the normal jet that can be dangerous for soft corals if placed too close.

I am using a Little Giant MDQX-SC rated at 1100gph, split into two 3/4" outlets at a 4' head which gives me around 500gph per outlet. This pump is rated at 6.2 PSI or ~14ft max head, so I'm guessing that each of my two outlets has about 3 PSI (Not sure what that means but I'm sure it makes sense to someone...). A pressure rated pump is desired for the full effect, but even with low pressure pumps it seems to at least double the amount of water circulation.

I have two extras that were my practice prototypes, will trade for a couple frags if anyone interested.

Will post pics of my design and parts needed, everything is from HD or Lowes, and are less than $5 total.

ps. I might have to go BB if I cant get the flow to stop kicking so much sand around.

Here are the parts and any associated numbers:

*Item numbers are from Lowes in Eastlake, CA so not sure if they will be the same anywhere else, model numbers should works at any store. I got everything for about $5.

1x 1 1/2" REDUCER COUPLING
- 1 1/2" INLET
- 1 1/4" OUTLET
- SLIP JOINT
- MANUFACTURER: DURACRAFT PLASTICS
- MODEL: 28WK
- ITEM*: 25017

1x 1 1/2" FEMALE ADAPTER ABS-DWV
- MODEL: C5803
- ITEM*: 22765

1x 1 1/2" COUPLING ABS-DWV
- MODEL: C5801
- ITEM*: 22797

1x 1 1/2" X 3/4" BUSHING SPIGOT X FIPT
- MANUFACTURER: LASCO SCH 40
- MODEL: 438210RMC
- ITEM*: 22715

1x 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER
- MANUFACTURER: ORBIT Water Master
- MODEL: 37161
- ITEM*: 194541

1x 1" length of 1 1/2" ABS PVC (black) per Eductor

Instructions

Use these pics as reference (note: in this pic I have a 3/4" Slip x 3/4" FIPT adapter that connects the Eductor to my 3/4" return line, you need to id what adapter YOU need for your setup)

TOOLS:

Small Hack Saw for PVC
Hand Drill
7/16 Drill Bit
1/2" Drill Bit

Step 1

You take the 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER and cut off the barb leaving only about 1/4" of it.

You take the 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER and attach it to the 1 1/2" X 3/4" BUSHING SPIGOT X FIPT adapter with the barb side going in first. Tighten the 1/2" Barb Adapter by hand until you can not tighten it anymore.

If this step is done correctly you should have about 1/2" of the 3/4" male thread from the 1/2" barb adapter sticking out of the 3/4" threaded side of the 1 1/2" X 3/4" BUSHING SPIGOT X FIPT adapter.

Now take a 7/16" Drill bit and enlarge the hole of the 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER to this size.

Step 2

Take the 1 1/2" COUPLING and attach the configuration made in Step 1 to one of the sides with PVC Glue.

Drill 8 x 1/2" evenly distributed holes 1/2" away from the lip on the opposite side of the 1 1/2" COUPLING.

Step 3

Take the 1 1/2" FEMALE ADAPTER and attach a 1" length of 1 1/2" ABS PVC to the non-threaded side and glue it together. You must make sure the PVC pipe is pushed in all the way so you only have 1/4" of PVC piping sticking out after you put it together, if its too long, cut it down or sand it down so there is only 1/4" sticking out.

Step 4

Take the 1 1/2" REDUCER COUPLING, and remove the threaded ring and gasket that come with it and put them aside since they are not needed.

Take the configuration created on Step 3 with the threaded side up, take the 1 1/2" REDUCER COUPLING and attach them together with the nipple side of the 1 1/2" REDUCER COUPLING going in first into the 1 1/2" FEMALE ADAPTER.

If done right, you should have the nipple from the 1 1/2" REDUCER COUPLING and the 1/4" lip of PVC on the same side of the 1 1/2" FEMALE ADAPTER.

chris wright · 04/23/2007, 04:52 AM

OZreefhead,

Can you do a detail of the parts that you you use and where you get them. Im going to try trade link and see what happens.

ivgonmad,

Thanks mate for the extra info.

04/19/2007, 09:00 AM	#26
sfsuphysics Registered Member Join Date: Jan 2004 Location: San Francisco Posts: 9,103	yeah I got the locline blues too, of course it'd be nice if the threaded piece could fit on either side. __________________ Mike

04/20/2007, 08:58 AM	#27
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	bump... __________________ 60g Frag Tank 60g Q.T. 240g Reef - 2x Dual 250w Coralvue MH Ballasts, 2x Custom Dual 250w Pendants, DAS EX-3 Protein Skimmer, GEN-X PCX-40 Return Pump, Iwaki 70 Closed Loop, Wave I Closed Loop, 4x Pacific Coast Flow Accelerators, GEO 612 Calcium Reactor w/Panworld Pump, 75g SDA Sump/Refugium, Fluorex 65w Floodlight Refugium Light Current Tank Info: 240g in the works B)

04/20/2007, 05:56 PM	#29
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	You could maybe replace the maxi mod with one of these on the outlet nozzle of the powerhead. __________________ 60g Frag Tank 60g Q.T. 240g Reef - 2x Dual 250w Coralvue MH Ballasts, 2x Custom Dual 250w Pendants, DAS EX-3 Protein Skimmer, GEN-X PCX-40 Return Pump, Iwaki 70 Closed Loop, Wave I Closed Loop, 4x Pacific Coast Flow Accelerators, GEO 612 Calcium Reactor w/Panworld Pump, 75g SDA Sump/Refugium, Fluorex 65w Floodlight Refugium Light Current Tank Info: 240g in the works B)

04/21/2007, 03:47 AM	#31
OZreefhead Registered Member Join Date: Mar 2007 Location: Australia Posts: 61	haha very nice idea, and the flow increase looks great on your vid, but it;s hard to understand all the parts ur using since ur from the US. I'll try to interprate anyway thnx __________________ Daniel Mitchell OUT Current Tank Info: Under Construction

04/21/2007, 03:50 AM	#32
OZreefhead Registered Member Join Date: Mar 2007 Location: Australia Posts: 61	oh and another thing if u put a SWCD on my CL pump which decreases flow by 20% then used 2 eductors on the outlets would i gain the 20% or even more back?? __________________ Daniel Mitchell OUT Current Tank Info: Under Construction

04/20/2007, 12:54 PM	#28
thriceanangel Registered Member Join Date: Jan 2006 Location: South Livonia, NY Posts: 1,729	I wonder what would happen if you put one of these on a maxi mod?

04/20/2007, 11:23 PM	#30
JCTewks Moved On Join Date: Oct 2005 Location: Wilmington, Ohio Posts: 3,040	you could try...but eductors are meant for pressure pumps, which a maxi jet is definitely not.

04/21/2007, 11:35 AM	#34
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	This is pretty cool. I am going to give it a try to see how it works with my dart and OM __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.

04/21/2007, 09:40 PM	#35
OZreefhead Registered Member Join Date: Mar 2007 Location: Australia Posts: 61	thats awsome; No more expensive OM wavemaker yay thnx heaps __________________ Daniel Mitchell OUT Current Tank Info: Under Construction

04/21/2007, 11:29 PM	#36
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	Glad its working for you guys!! __________________ 60g Frag Tank 60g Q.T. 240g Reef - 2x Dual 250w Coralvue MH Ballasts, 2x Custom Dual 250w Pendants, DAS EX-3 Protein Skimmer, GEN-X PCX-40 Return Pump, Iwaki 70 Closed Loop, Wave I Closed Loop, 4x Pacific Coast Flow Accelerators, GEO 612 Calcium Reactor w/Panworld Pump, 75g SDA Sump/Refugium, Fluorex 65w Floodlight Refugium Light Current Tank Info: 240g in the works B)

04/22/2007, 12:28 AM	#38
zeusfc Registered Member Join Date: Jan 2007 Location: Cyprus Posts: 352	Nice piece of work... I've been looking at doing something similar, using a 3/4" thread to 3/8" hose barb to "pinch" the flow before the vacuum area... these look far easier! but, does anyone know how these things can be made "nenny-safe"? I was looking at doing just one suction inlet, and taking the feed from my behind my wier, but if there's an easier way...

04/22/2007, 12:44 AM	#39
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	If you go down to 3/8" hose barb you will definitely need a high pressure pump to get the same results. You could always make a series of tiny 1/4" holes instead of the 1/2" holes. That should make it pretty safe for 'nems. __________________ 60g Frag Tank 60g Q.T. 240g Reef - 2x Dual 250w Coralvue MH Ballasts, 2x Custom Dual 250w Pendants, DAS EX-3 Protein Skimmer, GEN-X PCX-40 Return Pump, Iwaki 70 Closed Loop, Wave I Closed Loop, 4x Pacific Coast Flow Accelerators, GEO 612 Calcium Reactor w/Panworld Pump, 75g SDA Sump/Refugium, Fluorex 65w Floodlight Refugium Light Current Tank Info: 240g in the works B)

04/22/2007, 10:37 AM	#41
marino420td Premium Member Join Date: Mar 2004 Location: Cape Girardeau, MO Posts: 2,529	I am having a hard time following your drawings in the other thread. Could you (or someone) post picturs of the individual parts and the construction process? I don't mean to be a pain but I really want to try this. Thanks.

04/22/2007, 10:45 AM	#42
fat-tony Registered Member Join Date: Aug 2004 Location: Hornell, NY Posts: 1,483	http://www.reefcentral.com/forums/sh...t=scwd+finally hmm, wonder how it would work on my scwd __________________ Jason Current Tank Info: 125 mixed reef. Icecap 660 3x5' T5HO Icecap 430 2x6' VHO actinic

04/22/2007, 11:00 AM	#43
marcrunner Registered Member Join Date: Dec 2004 Location: Folsom Posts: 309	are 1/2" eductors available anywhere?

04/23/2007, 01:27 AM	#44
chris wright Moved On Join Date: Apr 2006 Location: Orange Australia Posts: 835	ivgonmad, can you post some pictures of the actual parts that you have used. Ive seen similar fittings, but im not sure of a couple of the drawings. Most of the fittings I have found have a nut for tighening, So im trying to find a way to vary your design to suit whats available in Australia. Any help would be good. Its a great idea, so im going to give it a go if I can find the parts. Thanks mate.

04/23/2007, 01:34 AM	#45
OZreefhead Registered Member Join Date: Mar 2007 Location: Australia Posts: 61	havnt made it yet but i showed dad all the pieces u stated and he said he could get them no worries- since he is a plumber lol- as soon as i make one i will post pics. __________________ Daniel Mitchell OUT Current Tank Info: Under Construction

04/23/2007, 02:09 AM	#46
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	oops... Last edited by ivgonmad; 04/23/2007 at 02:20 AM.

04/23/2007, 02:24 AM	#48
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	I guess I can just post the whole thing here.... Here ya go!!! __________________ 60g Frag Tank 60g Q.T. 240g Reef - 2x Dual 250w Coralvue MH Ballasts, 2x Custom Dual 250w Pendants, DAS EX-3 Protein Skimmer, GEN-X PCX-40 Return Pump, Iwaki 70 Closed Loop, Wave I Closed Loop, 4x Pacific Coast Flow Accelerators, GEO 612 Calcium Reactor w/Panworld Pump, 75g SDA Sump/Refugium, Fluorex 65w Floodlight Refugium Light Current Tank Info: 240g in the works B)

04/23/2007, 02:28 AM	#49
ivgonmad Registered Member Join Date: Oct 2006 Location: San Diego Posts: 468	*This is a re-post from another forum so ignore the initial explanation....* Anybody ever use an Eductor on their return outlet? They are supposed to increase water movement by 2x-5x. Just made me a couple out of 1.5" Black PVC and they seem to work way too good . I have sand dunes moving all around my 90g tank, before I just had two 500gph returns that made a very low amount of flow. With the eductors it is a lot better, seems like at least a 3x increase in flow (~1500gph per outlet) and it gave me a widely dispersed flow from the return instead of the normal jet that can be dangerous for soft corals if placed too close. I am using a Little Giant MDQX-SC rated at 1100gph, split into two 3/4" outlets at a 4' head which gives me around 500gph per outlet. This pump is rated at 6.2 PSI or ~14ft max head, so I'm guessing that each of my two outlets has about 3 PSI (Not sure what that means but I'm sure it makes sense to someone...). A pressure rated pump is desired for the full effect, but even with low pressure pumps it seems to at least double the amount of water circulation. I have two extras that were my practice prototypes, will trade for a couple frags if anyone interested. Will post pics of my design and parts needed, everything is from HD or Lowes, and are less than $5 total. ps. I might have to go BB if I cant get the flow to stop kicking so much sand around. Here are the parts and any associated numbers: Item numbers are from Lowes in Eastlake, CA so not sure if they will be the same anywhere else, model numbers should works at any store. I got everything for about $5. 1x 1 1/2" REDUCER COUPLING - 1 1/2" INLET - 1 1/4" OUTLET - SLIP JOINT - MANUFACTURER: DURACRAFT PLASTICS - MODEL: 28WK - ITEM: 25017 1x 1 1/2" FEMALE ADAPTER ABS-DWV - MODEL: C5803 - ITEM: 22765 1x 1 1/2" COUPLING ABS-DWV* - MODEL: C5801 - ITEM: 22797 1x 1 1/2" X 3/4" BUSHING SPIGOT X FIPT - MANUFACTURER: LASCO SCH 40 - MODEL: 438210RMC - ITEM: 22715 1x 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER - MANUFACTURER: ORBIT Water Master - MODEL: 37161 - ITEM: 194541 1x 1" length of 1 1/2" ABS PVC (black) per Eductor Instructions* Use these pics as reference (note: in this pic I have a 3/4" Slip x 3/4" FIPT adapter that connects the Eductor to my 3/4" return line, you need to id what adapter YOU need for your setup) TOOLS: Small Hack Saw for PVC Hand Drill 7/16 Drill Bit 1/2" Drill Bit Step 1 You take the 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER and cut off the barb leaving only about 1/4" of it. You take the 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER and attach it to the 1 1/2" X 3/4" BUSHING SPIGOT X FIPT adapter with the barb side going in first. Tighten the 1/2" Barb Adapter by hand until you can not tighten it anymore. If this step is done correctly you should have about 1/2" of the 3/4" male thread from the 1/2" barb adapter sticking out of the 3/4" threaded side of the 1 1/2" X 3/4" BUSHING SPIGOT X FIPT adapter. Now take a 7/16" Drill bit and enlarge the hole of the 1/2" BARB X 3/4" MALE THREAD NPT RISER FLEX ADAPTER to this size. Step 2 Take the 1 1/2" COUPLING and attach the configuration made in Step 1 to one of the sides with PVC Glue. Drill 8 x 1/2" evenly distributed holes 1/2" away from the lip on the opposite side of the 1 1/2" COUPLING. Step 3 Take the 1 1/2" FEMALE ADAPTER and attach a 1" length of 1 1/2" ABS PVC to the non-threaded side and glue it together. You must make sure the PVC pipe is pushed in all the way so you only have 1/4" of PVC piping sticking out after you put it together, if its too long, cut it down or sand it down so there is only 1/4" sticking out. Step 4 Take the 1 1/2" REDUCER COUPLING, and remove the threaded ring and gasket that come with it and put them aside since they are not needed. Take the configuration created on Step 3 with the threaded side up, take the 1 1/2" REDUCER COUPLING and attach them together with the nipple side of the 1 1/2" REDUCER COUPLING going in first into the 1 1/2" FEMALE ADAPTER. If done right, you should have the nipple from the 1 1/2" REDUCER COUPLING and the 1/4" lip of PVC on the same side of the 1 1/2" FEMALE ADAPTER. __________________ 60g Frag Tank 60g Q.T. 240g Reef - 2x Dual 250w Coralvue MH Ballasts, 2x Custom Dual 250w Pendants, DAS EX-3 Protein Skimmer, GEN-X PCX-40 Return Pump, Iwaki 70 Closed Loop, Wave I Closed Loop, 4x Pacific Coast Flow Accelerators, GEO 612 Calcium Reactor w/Panworld Pump, 75g SDA Sump/Refugium, Fluorex 65w Floodlight Refugium Light Current Tank Info: 240g in the works B)

04/23/2007, 04:52 AM	#50
chris wright Moved On Join Date: Apr 2006 Location: Orange Australia Posts: 835	OZreefhead, Can you do a detail of the parts that you you use and where you get them. Im going to try trade link and see what happens. ivgonmad, Thanks mate for the extra info.