Hi! I have a couple question on the whole proses of a qt tank! Now I understand the basics, I have to get an aquarium (5gl or larger) sponge filter, heater, pvc or plants, no gravel! I want a little more info on the water cleaning ect! I know you use the water from your display tank, do I use all the water source from my display tank or do I mix half display tank and half water condition water from the tap? Do I clean it every other day? Also, should I med my fish for bacterial and fungus? Or should I just do it if I notice symptoms? All these question I am asking are for me buying new fish, not a hospital tank! any answers would be appreciated! Just incase you ask I have a 55gl tank that has been set up for 5 years now, so my water would come from there, it is freshwater tropical fish!