Hi! Introduce yourselves here. :: My first post

[Nepkire]

My original concern was the pump handling dirty water now that the water will be filtered does it matter what pump as long as it can handle the correct gph?

[steve]

At 20 gallons, I don't think it would be a significant issue. Hopefully someone more familiar with this will chime in.

[Nepkire]

I hope this wouldnt be overkill

http://www.amazon.com/Rio-Plus-50-Aqua- ... roduct_top

[n3hihz]

The plan looks better, with the bio-foam filtering the water touch the pump.
I normally turn the water 5-10 times the amount per hour in my fish tank, but that's to promote an increase in oxygenation, which is probably not necessary here.
I would personally go with a 100-200GPH pump
This is my preferred pump for smaller application
http://www.amazon.com/Eheim-AEH1000310- ... im+compact since it has adjustable flow rate, I would set it down to the lowest setting at 150GPH and it would be 7.5 times amount of water.

That Rio 50 is definitely not overkill