Good CO2 reactor/diffuser compatible w/DIY?
I am trying a DIY CO2 set up for my 125 gallon tank. (it's an experiment, using a heater and a 5 gallon water cooler jug).
I was thinking about using a powerhead from my old undergravel filter that has a line-in for air tubing...would this work/be sufficient? Do I need more than one line for each side of the aquarium?
thanks for the help!