Ok, thanks for looking... Er... Clicking. Anyways, I have a guppy fry whom seems to have ich... I only have a crummy heater which simply maintains a temp... I do have a 200 watt heater in my empty 45.. Could I use that to heat the tank, or would it be too much? I can go and pick up some aquarium salt today, maybe some meds/ heater too... 10 gal with 10 guppy fry, 8 neon tetras, 1 Glo danio.