that stuff is fish safe. whats good stuff to use for puting tanks together. i have a old tank and all the sealent is bad and the tank glass pices came off. whats a good thing to buy to rebulid the tank. strong. what do the pros use. will this ge type 1 work. sorry to join in on your thread waldo u just broght up a good question
Make sure it says for window and door(blue and white tube I believe). The tub and tile has the mildewcides in it(red and white tube). The spout designates the color of the silicone, so make sure it's clear.
GE type I or II will work. Type I gives off acedic acid, smells like vinegar and is said to be slightly stronger. Type II is not as harmful when you breath it and still has good strength.