Heating water is energy intensive then you dump the heated water down the drain? Get ye a heat exchanger.
I dump heated water down the drain doing water changes and replace with heated water as it is. I may be able to set the hybrid tanks in a smaller area I can easily close off and heat to a higher temp. The rest I can get a little help from another heater and maintain the rest of the room around 80 degrees, hoping it keeps the tanks mid 70s, which should be good for centrals. I am still planning on installing a drip system to cut down the hours each week from water changes. Not trying to sound lazy, but 80 tanks has quite a few hours involved doing manual water changes and I'm definitely no spring chicken anymore. I'm hoping to maintain the room to around 80 degrees, along with the water drip, so the in tank heaters wouldn't be working all the time to catch up to a cold water drip. This is all still in the planning stages at this point. Definitely trying to look at all avenues before diving in so I'm not paying more for it down the road or backtracking fixing a lot of mistakes made.
