Crack in old aquarium

[Fredyyanez]

I’m setting up my old aquarium and found a really small crack on the bottom edge.

I want to seal it with silicone. I read that silicone 1 is the best one to use.

The thing is that on the packaging it says
“7-year mold-free” and I was wondering if it was safe to use.

I’ve attached a picture.

 

[Sniperhank]

You can not use any of the silicone with stuff that is 'mold free'. That stuff will leach into the water column. If I remember correctly, it'll basically uncycle your tank.

 

[tlindsey]

I personally sealed 2 aquariums with GE 100% Silicone and one of the aquariums has been up and running going on 4 yrs with no issues. Just make sure it has no anti mold inhibitors in it.

 

[Cpt carp]

Best bet is go to your local fish store or even amazon get some silicon sealant that is approved for aquariums no point in taking chances with your fish.may cost a little more but you know your fish are going to be safe

 

[bill.marshall]

I can't see top right corner of photo, to see if it says 1...

 

[charliebankston]

I've resealed many old aquariums with Ge silicone 1. Works great. Use a rubber glove on your finger, get it a little wet in clean water, and create a smooth bead line after applying

 

[charliebankston]

This one