heat pads are ridiculously expensive, even on ebay. submersible heaters are many times cheaper if you shop in the right places, and they allow you to adjust temps unlike the pads. pads also usually come with sticky surface which cannot be taken off without causing malfunctions in heat dispersal. my two cents: go with the submersible
macnasty Reviewed by macnasty on . Reservoir Temps between 48 - 52 fahrenheit my reservoir is on a concrete floor in my ebb n flow set up. Temps in the reservoir are between 48 - 52 degrees fahrenheit. have been reading that reservoir temps ideally should be in the 65 - 70 range if I remember correctly. what kind of danger is there for my plants (currently 2 week old seedlings) with these low reservoir temperatures? what is the best way to raise reservoir temperatures? (was considering heating pads) Rating: 5