I stopped in at PetCo today to check out the local price for aquarium silicone and discovered that they are, indeed, having a $1 a gallon sale for aquariums, until supplies run out or Jan 20th (?). Just thought I'd pass this info along to anyone looking to burn a little post-holiday cash on a new terrarium/aquarium. Definitely cheaper for me to get a new one than replace the panel in my old one.