500 litre aquarium sump : Help.

  • We are currently upgrading MFK. thanks! -neo
793 litres.
It's the largest I can use for the space I have, so I want lots of water volume within the filtration.
 
I'm stumped with the pump.
I'd like one that can provide plenty of oxygen.

I know I want to add a 6 litre per hour drip and drain system.

At the moment the tank has two 20" Pangagius Catfish (long story, they are not staying) a pair of Oscar, a 12" TSN, a Juv' Jag, pair of JD's and a 8" Arowana.

The rest of my Cichlids and Catfish are being put up for sale if I can not get an Aquarium to accept the Mekong pair.
 
With that stock youre probably going to have to be pushing about 1600 GPH if not more!!!!
Is the tank drilled, or will you be making the overflows yourself?
 
I've made a couple of over flows, the tank isn't drilled.
There are two 1.25" overflows, although after I made them I realised they need to be at least 1.5" so I'll be making some more.
I didn't realise it would be more than 1200 also! lol
 
The baffels are how you establish water levels. Think of the sump as a water fall. the variable end of the sump(where the water level will rise and fall with evaporation and water changes) is your pump/return end (aka the pond at the bottom of the water fall). The rest is controlled by the baffles you install. Because of this fact people often have large return reseviors to allow for more evaporation, easier water changes and some extra room should your plumbing have to empty into the sump so that you don't overflow it. To develop a understanding of your filter and how to design it you could build a small cheap dummy one with a power head return in a rubbermaid tub with a few sheets of miscellaneous plastic and some silicone. Once you see how it works you can revise and commit to the mega build.
 
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