Hey everyone, new to this forum, relatively new the the hobby and excited to learn as much as I can. Right now I have a 55 gallon freshwater aquarium with 2 featherfin catfish, 8 neon tetras, 3 gold barbs, 4 penguin tetras, 1 blackskirt tetra and 1 painted tetra. I'm planning to add 7 more neon...