I bought a 200w submersible heater for one of my tanks out of the box the glass was broken on the very bottom approx. 1/2" piece plus a crack approx. 2 to 3" long. The heater has never been plugged in. I know you can buy heaters cheap approx. 7.00 each for a 200w. Is there anyway that this can be fixed? I was thinking of using aquarium silicone but do not think it would work due to the heat ( might cause the silicone to break down ?? ) so now I am thinking if I were to get a Piece of PVC where the inside dia. is jus a little bigger then the heater tube. Use a pvc fitting to seal the end and use aquarium silicone to seal pvc to the glass. Good idea or bad?