There are formulas for figuring this out, otherwise it's kind of guesswork. There's one here, but I have not tested it's accuracy . I plugged in your numbers and it came back with 400w.How many watts should the heater be?
There are formulas for figuring this out, otherwise it's kind of guesswork. There's one here, but I have not tested it's accuracy . I plugged in your numbers and it came back with 400w.How many watts should the heater be?