you could do this i would just wire all the breader tubs together and all the hatchling tubs together...make sure you have 2 seperate t-stats or multipule temp probes like a herpastat 2 or pro...the hatchling tubs wont need as much heat as a breader tub so the flexwatt will be smaller and cannot be ran off of the same t-stat or wired together with the larger flexwatt...also make sure the total wattage dont exceed what you t-stat can do