I have 2 ten gallon incubators that are no longer in use. I would love to convert one of them into an incubator, but I need some help getting started in the right direction. One of them has a submersible water heater in it, could I use that to help heat it or not? If not, what would be the best heat source for it (and what would be the easiest, least confusing method of heating)? Any suggestions or input? I am sure someone else has probably already done this, I would love to get some advice. And also one more question- about how many chicken eggs would a ten gallon aquarium incubator hold? Thank you!