I been away for a while because of the move to the new house. The tanks are set up for a week or so but now I came home tonight to find my blennys new hang out was in one of my tunze, which told me it wasnt turning on. I run the 6100's with the big puck and one was burning hot.. I disconected it and took that 6100 out of the tank to clean it. After it ws cleaned I plugged it back in and it still doesnt work and the puck is burning hot. Needless to say I believe I need a new puck... any ideas ??? or does anyone have a puck to sell me please?? :'(