I want to build a purigen reactor

[jschall]

Title says it all.
I want to run about a liter (so I can ignore it for very long periods of time without recharging it) of purigen on my 75 gallon tank. I'd like to be able to very easily remove the purigen for recharging.

I'm thinking hang-on-back, such that the purigen is in a 2-4 liter hang-on-back container, a small (~30gph) pump pumps water to the bottom of the purigen, and the water overflows back into the tank. Where can I get such a container? Would I have to build it myself?

 

[HarlanAshmore]

why not just buy a hob filter and chuck it in there or if you have a cannister chuck it in there

 

[jschall]

why not just buy a hob filter and chuck it in there or if you have a cannister chuck it in there

I have a canister and an emperor 400, but purigen is really fine and needs a very fine bag so the amount I want to use would have flow problems in the canister and water wouldn't really move through the bags if I just threw them in the emperor.