needstrongsilicone

Hey guys, long time user but created this new account as my old email got lost in a void. I recently bought a 300 gallon glass tank from a local guy in town. Awesome deal on it, and beautiful tank, but it had a problem. Guy said the tank was filled last year up to the 3 overflows with no issues...

Okay, a lot of things I am hearing. I need to know which silicone would be best for holding a new piece of glass onto a 140 GAL aquarium. And also, re-sealing all the seams on the tank after I clean off EVERY bit of silicone. RTV108 GE SCS1200 Marineland 100% Clear Silicone Aquarium Sealant...