Hello,
I have a 20 gallon tall with 8 black neon tetras, 5 cherry barbs, 3 peppered coryadoras, 1 dwarf gourami, 2 otocinculus cats, and one bristlenose pleco. This tank is about 8-9 months old now. The bristlenose has been in the tank for about 2 months now and was the last addition.
My...