Return pump sizing

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choff

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I'm trying to size my return pump and wanted to get some opinions.

First the facts:
- 150g display
- 310 total water volume
- basement sump w/straight shot up for 11ft of head.
- Currently running a reeflo hammerhead throttled back. I'm looking to go internal because I actually want heat since I converted to led. The reeflo while quiet, has quite a vibration to it that we feel and hear the resonance in the room above.

Questions:
When "they" say 5 to 10x turnover is that total water volume or DT volume?

My DT split drains into a fuge (ornamental macros) and a frag tank (both 40b tanks). Those both drain into the sump. Does this impact the amount of flow I want?

I'm looking at the DC waveline 12000 which based on their flow curve gives me a max of 1,300 gph @ 11'

Thoughts?

Thanks for your input.
~Mike
 
This is the way I've always worked it:


Multiply your system volume by the number of times you want to turn over your system per hour.
Flow Rate = (display tank volume + sump volume) x turnover desired


This also requires an understanding of the type of reef you are keeping, higher turn over for SPS dominated 10 to 15x, and lower for soft-type coral or fish only with live rock 5 to 10x.


You also need to account for head pressure do to lengths of run and bends 90-degree elbows and so on.

This is not DT turn over at that's a different calculation altogether.

One more thing...
For a FOWLR tank, flow rate should be at least 7 times per hour.
For a reef tank, recommended flow rate is at least 10 times per hour up to as much as 30 times per hour or higher.
 
Last edited:
This is the way I've always worked it:


Multiply your system volume by the number of times you want to turn over your system per hour.
Flow Rate = (display tank volume + sump volume) x turnover desired


This also requires an understanding of the type of reef you are keeping, higher turn over for SPS dominated 10 to 15x, and lower for soft-type coral or fish only with live rock 5 to 10x.


You also need to account for head pressure do to lengths of run and bends 90-degree elbows and so on.

This is not DT turn over at that's a different calculation altogether.

One more thing...
For a FOWLR tank, flow rate should be at least 7 times per hour.
For a reef tank, recommended flow rate is at least 10 times per hour up to as much as 30 times per hour or higher.
Diy master we meet again
 

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