My boyfriend and I have just recently become aquarium fanatics. We bought a 10 gallon tank. I went to work and came home and he had another 10 gallon. Someone at work gave us a 15 gallon and then he bought a 75 gallon from a friend for cheap with a stand. Catch is we had to clean it(gross the guy had turtles and sold the turtles and left the water and rocks and all other remains in the bottom) do we only have the 15 gallon now with 2 small guppies, 6 neon tetras, a corydora catfish, a dwarf gourami and a sucker fish that we can't find anywhere lol. All really small. Under 1/1.5 inches. We have one of the 10 gallons set up for filtering so we have water handy for Water changes. We want to eventually move everything to the 75 gallon but we want I have live plants and I'm a bit of a craft person so I'm going to craft my own tank displays for inside (speaking of.. any suggestions or sealing tank decor is awesome... And greatly appreciated) ive done some research and found everyone saying krylon polyurethane is the best? Anyways. I want to make a rooting system. I have uploaded pictures of our dwarf gourami. Maybe it's just me but her(I say her because she's pretty I do not know her actual sex) dorsal fin on the top has something wrong. When we first got her Is the brighter picture and we've had her... A week or 2 and now only part of the fin is working? Help?