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Discussion Starter #1
I have an old external filter casing. It was sold for use as extra
filter capacitor. Basically it is an external filter without the
impeller.

I wa going to make an external CO2 reactor using plumbing parts, but was
wondering whether I could used the "filter casing" instead, and fill it
with Bio Balls.

Is this a good idea?
 

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It could work...but what is going to drive the water in-out of the "emtpy" filter/reactor? Another filter?

By the ways, WELCOME TO THE PLANTED TANK!!! :)
 

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co2 injection into sump

i am in the process of setting up a 48 x 24 x 36 with a sump and i am having a planted tank, is there ways of injecting co2 into my sump. (i want as little eye sores in my tank as possible)
 
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