Well one thing I've learned is it takes quite a bit of wattage to treat ich on a large tank in a cool basement. So my new 220g developed ich, I have a titanium 800w heater to heat it which I keep it around 77 to 78 degrees. Now my basement is 55 degrees currently so the 800w heater can keep that temp. Now that I have an ich outbreak I use the heat method and have had great success with it. I need 86 to 87 degrees. I've had to add another 300w heater to achieve that temp and maintain it. So I wonder what my next electric bill is gonna look like.