Quote Originally Posted by greenmonkey51
I am using a 12"x11" peice of flexwatt on a 20gal long tank. I have dimmer on it. Can I put about 4"-6" of the other peice of 11" flexwatt on the cool end with a dimmer set at 80F
Those dimmers with the temps labeled on them suck as far as accuracy goes. You really need to adjust the dimmer so that the temps on your digital thermometer are correct regardless of what the dimmer reads.

-adam