Hi, I was wondering what size heater I would need for a 40g tote/storage bin. The bin would have a somewhat similar footprint to a 40g breeder. I would need the temperature of the water to be at 77-80 F (for guppy fry) with the outside temperature being about 62-64 F because it will be located in my unheated basement (that won't be an issue, btw, will it?) I entered it into Fishlore's heater size calculator and it said 300 watts, which seems a bit excessive to me because everything I've read says 200 watts. I really don't want to mess anything up and I don't know who to listen to. Help!