Resealing tank, this sealant ok?

I was just getting ready to put water in my 135 gallon when we discovered a leak. we lifted it up with a little bit of water still inside and when it tilted a certain way water was leaking out of the bottom. so i went and got some sealant and razors and am about to get started but i figured i should probably check to make sure the sealant is safe for the fishies.



yay or nay?

 

heres the back of the tube

 

on the tube it states not for continuous underwater use

 

I have had this question myself.

The aquarium silicone says 100% silicone and so does this silicone tube. If they are both 100% silicone whats the difference?

 

it also says safe for food contact which is one of the requirements per a random post about resealing aquariums that i read

 

I have heard (or rather read in other post) that if it says 100% silicone it is reef safe. I used the GE brand from home depot when i built my overflow box and to re-silicone my glass sump. Have only freshwater tested it though so i cant guarantee you its safe or not for reef. But i am confident it is.

 

Any 100% silicone should do fine, but coming from the metal roofing buisness, not all are created equal. From my personal experience nothing can outlast a geocel brand of silicone. While more expensive, it is really really worth it. The only think that i know that outlasts geocel would be an everseal glue, but that isnt safe for reef as its not silicone =) Try looking at your local hardware suppliers or your local lowes or home depot and try to get either 8125 high perfomance voc free 100% silicone. Geocel also makes an aquarium sealant but it is in smaller bottles and more expensive, try googling it.

 

GE type 1 silicone I believe.. type II not recommended.. someone will correct me if im wrong.. or goto your LFS and pay for the aquarium brand silicone in squeeze tube.

 

I've used GE type I clear. But Dap works also. I think companies have to put not for aquarium use or not for underwater use on the label for liability reasons. Don't quote me on that though.

 

Correct, its a liability issue.