*****The TL450 Boyu nano-marine aquarium*****
I've kept fish for years - tropical and coldwater, brackish and the like - but always stayed away from marine fish keeping. A fear of potentially losing some very expensive fish (and marine fish really are some of the most pricey species you can ... Read review
im not sure what equipment you got with your tank, but you should be able to use it for freshwater fish. You do not need a protein skimmer for freshwater tanks, only marine and coral tanks. If it can be removed, i would take it out. However it won't do any harm as it just removes chemicals and other rubbish from the tank. Given the size of the tank, i should think that the water quality should be easily maintained with regular water changes.