well in my 5 gallon im using a 50W heater but have many others up to 100 from my dads old aquariums and im using a 20 aqua clear hanging filter but also have others which are bigger and i have a aqua clear powerhead for up to 10 G tanks but i have others as well available. . . .the only thing im lacking is light...in my 5 i have a 10 watt compact cora life but have fixtures available to hold 2 footers and 3s