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View Full Version : Which pump for a wet/dry filter?


Felixc395
06/14/2010, 10:54 PM
I've found this wet/dry filter that I'm interested in but still have a question puzzling me. I have everything I need to know about the sump itself but not the pump. The instructions say that the overflow box will require a pump with a 300 gph rate to return the water but I can't find one to be exactly 300? Does it matter if the pump's gph rate is exactly 300 or not? (I hope this doesn't sound like a stupid question)

Thanks in advance everyone!

lvpd186
06/15/2010, 06:40 AM
I've found this wet/dry filter that I'm interested in but still have a question puzzling me. I have everything I need to know about the sump itself but not the pump. The instructions say that the overflow box will require a pump with a 300 gph rate to return the water but I can't find one to be exactly 300? Does it matter if the pump's gph rate is exactly 300 or not? (I hope this doesn't sound like a stupid question)

Thanks in advance everyone!

Your best bet is to find a pump that will come close to matching that after headloss. On the front page of RC there is a headloss calculator. You can use that to see what different pumps will work with your plumbing. You can also add a valve to your plumbing to fine tune the output of your pump. Hope that helps..

Chris27
06/15/2010, 08:44 AM
Post your tank size, overflow specifications, and perhaps the manufacturer of the sump. From there, folks can provided an educated answer.

Felixc395
06/15/2010, 10:12 AM
My tank is 37 gallons and the sump is an Eshopps filter that is designed for 10-75 galllon tanks. As far as the overflow box all it says is it has one hose drain and requires a 300 gph flow rate.

Chris27
06/15/2010, 11:54 AM
Perfect - a Mag 5 or similar would be a good size for that setup once you factor in head loss.

Felixc395
06/15/2010, 12:52 PM
Great, I looked at the headloss calculator on the front page and I was confused. I'm assuming headloss is just the pressure lost from going uphill against gravity? Is that right?

Chris27
06/15/2010, 01:52 PM
Yup - vertical distance from the pump to the output.

Felixc395
06/15/2010, 03:25 PM
Ok, is the mag 5 the only pump that would work? I don't think my LFS has them in stock. I could always order one online but are there any other brands?

Chris27
06/15/2010, 08:51 PM
No, any similarly sized pump will do the job. Eheim, Rio, Red Dragon, Bubble Blaster and Quiet One are a few that come to mind.