im new here, and need to reseal a leaking 120 gal tall aquarium. how has the rtv108 been holding up? and any other tips or suggestions other than whats already been posted? thanks!ricoishere;3475087; said:If yowant one of the best for quarium sealants, look here, they have the industrial version of GE Silicone I, which is RTV108, at a very reasonable price. I just used it to reseal my 120. http://www.angelsplus.com/SuppliesFishroom.htm