Hi, I wonder if anyone has used these and whether these here are any good? Will they produce enough heat for winter where temps fall to about 45 - 50 F? Dp they produce similar levels of heat as the flexwatt tape? Or are they pretty much like the exo's which seem to produce some supplemental heat but not much?
http://www.hydor.it/inglese/caliento.htm
http://www.hydor.it/inglese/caliento.htm