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07/11/2015, 12:40 PM | #1 |
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What size return and drain lines?
What size return and drain lines should I ise for a 93 cube tank with a basement sump? The lines will go through the wall and then down to the basement to the sump. From the sump to the top of the tank will be about 8 feet. My return pump will be a Roual Exclusiv rd3 80 watt pump. The tank will be a corner overflow marineland rimless tank. Not sure what the standard size bulk heads the tank come with.
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07/11/2015, 01:08 PM | #2 | |
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my return was 1 inch and was causing my pump to loose pressure... |
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07/11/2015, 04:12 PM | #3 |
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Looking at the flow curve for the RD3, you're probably looking at some where between 900 & 1100 gph, depending on your plumbing. At that flow there's not a ton of difference in resistance between 1.5 and 1.25" plumbing. There's a head loss calculator on the RC home page. It doesn't have the Red Dragon pumps, so you have to pick a pump that has close to the same flow at the head pressure you're looking at and use a bit of trial and error.
You don't say what kind of overflow you're planning on having - that makes a big difference in pipe size. Since it's a corner overflow I assume you're not doing a bean. If it's a siphon, like a Herbie, a 1.25 or even a 1" pipe would suffice (a 1" pipe running at a full siphon with an 8' drop can handle 2500-3000 gph). If you're going to do a durso then the 2" that ericarenee suggests would be more appropriate. If you are doing a durso, you may run into problems with the bulkhead. Most tanks like that have 1" or even ¾" bulkheads, which would make a durso difficult to run quietly.
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
07/11/2015, 04:22 PM | #4 |
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I use an Iwaki 100 with its required hose size (uses 1" interior diameter) or a 102 gallon with a basement sump---and my drain line is 1/2" wider than my up line. I can say the Iwaki sounds like a plane trying to take off: not the quietest, but it's tough.
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Sk8r Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low. Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%. |
07/11/2015, 04:35 PM | #5 | |
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Mine is setup a bit different then any i have seen but some of it is similar. I just could not see a real reason to run 4 lines from tank down to basement across room 15 feet then down again.... So i dropped 3 1 inch drains out of back box into a manifold on a two inch drain pipe then runs down 5 feet and over about 16 feet where it drops into my pre filter box. then into another manifold and with 1 inch ball valves one drops into my algae scrubber one to my Fuge the other to my sump.. And there is a 4th that goes up over and down as a safety. back up at the tank inside the external over flow box is of course the 3 pipes two turn down with one of them having a ball valve to adjust water level. the 3rd has a t pipe that is right at the water level This is the emergency. Its super quiet to be carrying nearly 3000 gph .. Here is a image of the back of my tank. The plumbing inside it is arranged as above a bit different then in this image.. But same concept.. Hope this help you some OP......You can take a idea from others and modify it as i done with mine... pvc is cheap to experiment with |
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07/11/2015, 05:18 PM | #6 |
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That's the only problem with the reef ready tanks. You are very limited on what you can do plumbing wise.
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07/11/2015, 05:51 PM | #7 |
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07/11/2015, 07:33 PM | #8 | |
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
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07/11/2015, 07:35 PM | #9 |
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Yeah I think you might be right but I need to ask myself if I agree. I thank I was trying to quote you.
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240+G Mixed BB Reef tank.. 350 G Marine Pond. And the expensive stuff that runs it. Chic's are for Chic's You silly men Go Fishing or something... Current Tank Info: 240= gal Reef /550 Gallon Saltwater pond 72 G Bay front Tropical aquarium |
07/12/2015, 10:32 AM | #10 | |
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Honestly thought, i came across this choice based on the size of the tank, and how much flow i wanted.. the RR versions i think come with a single 3/4" return.. part of the reason i didnt buy the RR version, i wanted to make my own choice for overflow/return
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Support your local Reef Club! Upstate Ny - Lake Ontario Reef Society Current: 40B- Fish, Water, Rocks, Sand, Pumps, Heaters, Skimmer, Coral 93C build coming soon |
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07/12/2015, 02:53 PM | #11 |
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Depends on the tank, and the age. Marineland used to come with a 1" and 3/4' bulkhead per corner; but more recent vintage tanks come with dual 1". FWIW, I find a single 1" return and three 1" drains sufficient for my 265.
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Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs |
07/12/2015, 03:11 PM | #12 | |
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07/12/2015, 03:23 PM | #13 |
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Mag24 doesn't 'require' a 1 1/2" return, though you can certainly use one if you wish. Ran one for a while and hated it. My current PW 150 is far better.
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Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs |
07/12/2015, 03:35 PM | #14 | |
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I called danner and talked to someone they told me even thou it has a 1 inch outlet the pump Must be connected to 1 1/2 return line.. So i said then why does it only have 1 inch. and ask them to send me a new impeller not believing them. They did so but warned me it would not fix my issue. They were right. I switched it on top the pump i put a 1 inch to 1 1/2 female threaded adapter then hard plumbed 1 1/2 to tank and the rattling stopped and the flow rate Doubled... at 3 feet it prob is ok with 1 inch. NOW With all the above said. I TOO Do not like the 24 its still noisy but works well... I am just going to replace it with a commercial pump and be done ..... ohh and on the pump documentation it says recommended 1 1/2 inch outlet plumbing . but its no biggie.... So OP Just read the recommendations from the pump manufacturer or you may end up re plumbing as i did .of Course i have 14 foot of head height. |
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07/12/2015, 09:53 PM | #15 |
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That makes no sense .... but that's OK .... Mag pumps are old technology .... noisy, use a lot of juice and add a lot of heat.
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Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs |
07/13/2015, 12:09 PM | #16 |
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I've heard that before - thought it was 1 ¼" they required, but maybe that was for a mag 12. I can't come up with a good reason why the smaller plumbing would do anything other than cut flow a bit other than perhaps there's something with the volute that can setup a sympathetic oscillation int he plumbing.
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~~~~~~~~~~~~~~~~~~~~~ 120 gallon, coast to coast overflow w/beananimal overflow. Waveline DC 10000 II return pump, 40 gal sump, Octopus XS200 skimmer, T5 lighting |
11/27/2017, 04:38 PM | #17 |
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I know this thread is not active, but for the sake of convenience, if someone is searching for a more precise answer to the original question: https://flexpvc.com/Reference/WaterF...PipeSize.shtml
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