Can someone tell me what kind or if i can use silicone at to fill in cracks on the bottlom of my tank? And also would it be a good idea to silicone the probe for the hydrafarm temp controller to the glass on bottom under aspen bedding? Just because my guys keep climbing on them and sometimes they pull it out to the surface so i re place it back. And i obviously wouldnt silicone the actual probe its self, but the cord to secure the probe down..

thanks in advance

kevin