What would be the best way to determine how much co2 i should be
putting in my tank(20 G) ?
I have a 28 Watt, 7200 K. light, and 7 plants. Does one bubble every 5
sec. sound good? i have been using a homemade set up( 2 litre bottle
etc.) but i am thinking of "going pro." and doing it right.
thanks,
lost in taiwan