Anyways, I have used a "250 gallon" heater for an 80. It literally is not the wattage, but rather that it does the job. I find it hard to squish a heater in anything under a gallon xD As long as the heater is adjustable and you have a thermometer you should be fine. Test the heater first in there, adjust it as needed, and there ya go.
How long tell that Jett's gets a bigger tank is it a tempary breeding setup?
he was in there for three days before he got a new tank. he'll eventually be living in a 5 gallon. I have the filter on full blast for him right now. and honestly the current is like a gentle breeze to the plakat