Just out of curiosity, would a single female fire mouth could have worked?
Ok no glo light tetras and no neon tetras at all. How about just 2 schools of serpae tetras and black phantom tetras at 8-10 each? As for a center piece
Any do's or dont's I should know about for my first pressurized co2 set up? In hindsight, anything you wish you would have known when you started?
The impact of another bottle would be mostly in your wallet, imo. You have to give the bacteria time to colonize and multiply. The bacteria in a bottle