Return Pump Size?

[Shep]

Kind of realized that my return pump that does 350gph probably wont cut it for my shadow overflow, the main drain is a 1.5 inch that narrows down to a 1 inch pipe. The top of the tank is at about 50 inches, suggestions on GPH for the return pump?

 

[Ocelaris]

What sized tank? I shoot for 10x turnover at the high end. And depending on the return plumbing, try to account for head loss.

 

[Shep]

its a 40 gallon tank

 

[Ocelaris]

its a 40 gallon tank

So roughly 400gph, but what's your return plumbing? 3/4 pvc or poly tubing? How many 90s, how high does it have to go? Do you plan on running anything else off the pump like a reactor or manifold?

 

[Shep]

So roughly 400gph, but what's your return plumbing? 3/4 pvc or poly tubing? How many 90s, how high does it have to go? Do you plan on running anything else off the pump like a reactor or manifold?

probably 3/4 poly tubing, 1 90 and it has to go ~4ft up

 

[Ocelaris]

probably 3/4 poly tubing, 1 90 and it has to go ~4ft up

1 inch max drain is 900 gph, so you could probably safely go up to 1000 gph max and be fine with your drain.



https://www.reef2reef.com/threads/1-pvc-flow-rate.125543/

http://www.reefcentral.com/index.php/head-loss-calculator

 

[Ocelaris]

1 inch max drain is 900 gph, so you could probably safely go up to 1000 gph max and be fine with your drain.



https://www.reef2reef.com/threads/1-pvc-flow-rate.125543/

http://www.reefcentral.com/index.php/head-loss-calculator

But given the tank size shoot for 700gph or so, it'll be half by the time wear and gunk and head loss are accounted for.

 

[mfinn]

its a 40 gallon tank

no reason to need more than 200 gph to 240 gph.

 

[Shep]

This is my current one https://www.marinedepot.com/Sicce_S...arium_Pumps-Sicce_USA-XJ1135-FIWPEPZT-vi.html

 

[Big G]

Big fan of RO Varios-2. Extremely quiet. Parts are available if needed; unlike lots of other imported pumps. I use it on my 90, but it's maxed out. Would be perfect for your size tank. Hope this helps. Cheers!

 

[Ocelaris]

Big fan of RO Varios-2. Extremely quiet. Parts are available if needed; unlike lots of other imported pumps. I use it on my 90, but it's maxed out. Would be perfect for your size tank. Hope this helps. Cheers!

I also like the reef octopus varios pumps. DC is nice, but costs a bit more for the adjustment of flow. With that head, that or the sicce 3 or 3.5. I have basically the biggest sicce ac pump they make on my 110 running a manifold and it is great, but almost maxes out my 1" drain. But it's a personal preference how much flow you send through your sump. I have a uv, big slimmer and chaeto, so I want as much as I can get. Other people run less, but a 10x goal works for me.