Hello all,
I have a 38 g, mature, heavily planted tank currently stocked with 1 dwarf gourami, 9 glow light tetras, 1 guppy, 1 platy, otos and julii Cory catfish (and cherry, Amano and ghost shrimp and snails). It receives weekly water changes of ~30% w/nitrate, nitrite and ammonia all at 0...