Bests & Worsts Reviews from Amazon

I order two of these. I am a co-pastor at my church and we ordered these to heat a 500-700 gallon baptistry. I filled the baptistry on Friday afternoon and the temp was a toasty 87 degrees for Sunday morning. I made a couple of flotation devices made of 1 square foot hard foam insulation and I kept the wire from getting wet with pipe tube insulation! It worked heavenly!