First DIY CO2, nervous about gassing fish.
Hey so my tank is a 29 gal planted with amazon swords, crypts, and java fern. I set up the jello co2 today and within about four hours I have a steady 1 bubble every 2 seconds. Have a airstone as a diffuser right below the hob filter intake. My concern is the fish. I have neons, mollies, pair of rams, corys, and some amano shrimp.
I don't want to gas them out. I run a long air tube thing for aeration and my biowheel makes some good surface agitation.
I guess my question is at what point should I worry about killing my fish with co2 if at all?