i've used both back and belly heat in racks. i much prefer belly heat. the back does work but i find i have to crank up the thermostats alot higher to get the temps right. for example my adult tubs are set at 94 on belly heat to get 90-94 deg on the hot side. on my baby rack with back heat, i set the stat to 100 to get the tubs in the high 80's. if i had belly heat on my baby rack, i know i would not have to set my stat anywhere near 100 deg. my next baby rack will be belly heat!


vaughn