I have read the threads on the proper Home Depot silicone for our tanks but there doesn't seem to be a consensus on which one is o.k. Most people have said that the GE Door and Window I (NOT GE DOOR AND WINDOW II) is O.K. but I still don't feel good about buying it. Can someone please reassure me? I would rather use aquarium silicone but so far I've only found the 1 and 3 oz tubes at LFSs. Has anyone seen the 10oz tube at a LFS and if so, where?