i'm bumping this thread because i just picked up an old metal frame tank that i want to rehab and had some questions. has anyone else tried the reseal on a metal frame tank that has a slate bottom? the tank i picked up is about 40 gallons, and is the approximate side of a 40 breeder tank, give or take. i found some small leaks on the water test, and say that someone had done a reseal with silicone in the past. i found what i think were the leaking spots and removes the silicone. my question is this: Will the silicone seal reliably to the slate, or do i need to reseal with something else; and if so, whats my best option?
i really think these older tanks need saving, and i have heard that it can be done, what do you all think?