I have a 20 gallon tall tank, it is cycled and has a hang on the back filter. I already have 1 dwarf gourami and 6 kuhli loaches, how many more fish can I get and are there any good looking top dwellings fish.
Sure, so my water ph is about 7.2, and the hardness is fairly hard, I don't know we're my dad keeps the strips for testing it. As for the dimensions, L:20 inches W:10 inches and H:18-19 inches.
I hate to be the bearer of bad news, but based on the dimensions, you actually have a 15 gallon tank. According to the aqadvisor calculator, which takes into account the bioload of fish rather than just their size, you are at 100% capacity for fish.