I have a 75 gallon tank I'm going to be using for the sole purpose of breeding some severums in. Currently I don't have a heater I think will bring the temp up to what I have read is ideal breeding temp of 82. I'm looking at a few options and wanted everyone's advice. I keep the house around 71. So 11 degree difference with a decently snug glass lid. Will be running low light and it has a cannister filter and circulation pump. I'm wondering if 2 co-op heaters would be sufficient?