I have a fluvial spec 5, and I obviously didn't do my research because 2 weeks in I already have 10 life forms in it, and an algae bloom. I'm afraid I overstocked my tank and my parents won't let me return any fish due to the fact that we bought them. For this reason, I'm seeing if I can upgrade the filter so that I can keep ammonia levels down. Also, what test things to I need to buy? Right now I don't have anything for the aquairium beside the tank and built in components themselves, plants and fish, an anti-chlorinator bottle, and food. Yes, I know I should move the tetras because it's the tank is too small but right now there isn't much I can do for them.