Witch pump?

aaron L · 10/24/2007, 02:25 PM

I have a mag 18 as a return on my 120. I have been told that it is too much. They said i need to drop to a mag 9.5 to give my cheato time to eat

Carlos · 10/24/2007, 02:36 PM

Install a gate valve and throttle it back.

Carlos

Piscator · 10/24/2007, 02:37 PM

I'm sure you will get different opinions, but I don't think the 18 is too much. You could always use a ball valve on the return side to throttle it back a bit...

I've frankly never understood the "slow water" in the fuge thing. Sure, you don't want your ball of chaeto to get hammered by the flow, but its not like the nitrates are on a conveyor belt and the chaeto has to grab them as they go by....

Best wishes,

reefergeorge · 10/24/2007, 02:42 PM

If you have dual overflows I think it is fine. I have a 9.5 on my 90 and wish I would have went with the 12.
I have also been told you only want as much flow through your sump as your skimmer can skim, and make up the rest of the flow with cl or ph.

rustybucket145 · 10/24/2007, 02:47 PM

Are you having a micro bubble problem or something? If not, it's not too much flow.

aaron L · 10/24/2007, 02:55 PM

No micro bubbles or anything.

aaron L · 10/24/2007, 02:57 PM

Quote:

Originally posted by reefergeorge
If you have dual overflows I think it is fine. I have a 9.5 on my 90 and wish I would have went with the 12.
I have also been told you only want as much flow through your sump as your skimmer can skim, and make up the rest of the flow with cl or ph.

How can you tell if you have to much flow for the skimmer?

rustybucket145 · 10/24/2007, 02:57 PM

Then no problem... Tell the people telling you this to worry about their own tanks

bertoni · 10/24/2007, 02:58 PM

Well, throttling back might reduce noise and some some electricity, but I don't personally think the Chaetomorpha much cares, as long as it's not being shredded. I'd probably only target about 300 gph through the sump, but if you are happy with the setup, I'd say leave it alone.

bertoni · 10/24/2007, 03:00 PM

Unless you're using an overflow-driven recirculating skimmer, the flow through the sump doesn't affect the skimmer, well, in the range we're discussing. Zero flow would cause a problem.

aaron L · 10/24/2007, 03:10 PM

Thanks for the help

Playa-1 · 10/24/2007, 06:42 PM

Quote:

Originally posted by bertoni
Well, throttling back might reduce noise and save some electricity, but I don't personally think the Chaetomorpha much cares, as long as it's not being shredded. I'd probably only target about 300 gph through the sump, but if you are happy with the setup, I'd say leave it alone.

Agreed

gowlover · 10/24/2007, 07:19 PM

Quote:

but its not like the nitrates are on a conveyor belt and the chaeto has to grab them as they go by....

Best wishes, [/B]

LMAO!!! I think that is the funniest thing ive heard! lol

RGRDGR · 10/24/2007, 07:28 PM

You can throttle back any pump all you are doing is increasing the head pressure, it will run a little warmer and burn a few more watts.

10/24/2007, 02:25 PM	#1
aaron L Registered Member Join Date: Dec 2006 Location: Watauga Texas Posts: 110	Witch pump? I have a mag 18 as a return on my 120. I have been told that it is too much. They said i need to drop to a mag 9.5 to give my cheato time to eat __________________ 175 gallon bowfront, halides and coral Current Tank Info: 175 bowfront

10/24/2007, 02:36 PM	#2
Carlos Premium Member Join Date: Dec 1999 Location: Chicago, IL Posts: 7,258	Install a gate valve and throttle it back. Carlos __________________ Carlos "Only a fool wants to hear the echo of his own voice." "What do you want for nothing? rrrrrrubber biscuit?" Current Tank Info: Custom 210 gal Reef Octopus Tank with SlimFlow overflow, IceCap 36XL Sump, Reef Octopus ELITE 200INT Skimmer, 2-Part Dosing, 3 x Giesemann VerVve, KH Guardian Alk Controller, ClariSea Roller Filter

10/24/2007, 02:37 PM	#3
Piscator Registered Member Join Date: Jul 2005 Location: Whitinsville MA Posts: 264	I'm sure you will get different opinions, but I don't think the 18 is too much. You could always use a ball valve on the return side to throttle it back a bit... I've frankly never understood the "slow water" in the fuge thing. Sure, you don't want your ball of chaeto to get hammered by the flow, but its not like the nitrates are on a conveyor belt and the chaeto has to grab them as they go by.... Best wishes, __________________ -Jason Prayer is Protein Skimming for the Soul Current Tank Info: 75 Gal. + 30 Gal sump, PC lights, LR, Skimmer, fuge; 30 gal. livebearer tank; 55 gal. SA Cichlid tank in progress...

10/24/2007, 02:42 PM	#4
reefergeorge Registered Member Join Date: Jun 2006 Location: St Louis MO Posts: 4,222	If you have dual overflows I think it is fine. I have a 9.5 on my 90 and wish I would have went with the 12. I have also been told you only want as much flow through your sump as your skimmer can skim, and make up the rest of the flow with cl or ph. __________________ $35-50 for a <1" frag of some stupid named thing that came from a colony you bought for $40-60 wholesale and chopped into 20-40 pieces? No thanks. "JasonH" Current Tank Info: 125 aggressive reef, DIY led lighting, swc cone skimmer, 33 gallon sump, posiden Ps3 return.

10/24/2007, 02:47 PM	#5
rustybucket145 Registered Member Join Date: Jan 2006 Location: valdosta, ga Posts: 3,707	Are you having a micro bubble problem or something? If not, it's not too much flow. __________________ 400gals of various tanks in the same system. Current Tank Info: 2 175w MH, 2 VH0 Actinics, Lots of Live Rock, tons of copepods, a Fat Mandarin Goby, Niger Trigger, Yellow Tang, Falco Hawkfish, Bi-Color Pseudo, numerous soft, SPS and LPS Corals

10/24/2007, 02:55 PM	#6
aaron L Registered Member Join Date: Dec 2006 Location: Watauga Texas Posts: 110	No micro bubbles or anything. __________________ 175 gallon bowfront, halides and coral Current Tank Info: 175 bowfront

10/24/2007, 02:57 PM	#8
rustybucket145 Registered Member Join Date: Jan 2006 Location: valdosta, ga Posts: 3,707	Then no problem... Tell the people telling you this to worry about their own tanks __________________ 400gals of various tanks in the same system. Current Tank Info: 2 175w MH, 2 VH0 Actinics, Lots of Live Rock, tons of copepods, a Fat Mandarin Goby, Niger Trigger, Yellow Tang, Falco Hawkfish, Bi-Color Pseudo, numerous soft, SPS and LPS Corals

10/24/2007, 02:58 PM	#9
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	Well, throttling back might reduce noise and some some electricity, but I don't personally think the Chaetomorpha much cares, as long as it's not being shredded. I'd probably only target about 300 gph through the sump, but if you are happy with the setup, I'd say leave it alone. __________________ Jonathan Bertoni

10/24/2007, 03:00 PM	#10
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	Unless you're using an overflow-driven recirculating skimmer, the flow through the sump doesn't affect the skimmer, well, in the range we're discussing. Zero flow would cause a problem. __________________ Jonathan Bertoni

10/24/2007, 03:10 PM	#11
aaron L Registered Member Join Date: Dec 2006 Location: Watauga Texas Posts: 110	Thanks for the help __________________ 175 gallon bowfront, halides and coral Current Tank Info: 175 bowfront

10/24/2007, 07:28 PM	#14
RGRDGR Premium Member Join Date: Aug 2007 Location: Carmel Valley, ca. Posts: 53	You can throttle back any pump all you are doing is increasing the head pressure, it will run a little warmer and burn a few more watts.