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suitable silicones

3K views 3 replies 3 participants last post by  ArKitEKt47 
#1 ·
Ok, so i have built a tank using clear aquarium silicone. I am aware that fish tanks cannot be made with simple household silicones and that they should be made with special aquarium silicone. I have an iron frame that i wanted to brace my tank with and i wanted to silicone my tank to this brace. Would it be safe to use household silicone (I want to use black) on the OUTSIDE of the tank between the glass and the frame?
 
#2 ·
If your tank is totally sealed on the inside then what you put on the outside is pretty irrelevant so yes that would be fine.

However, as far as I know you don't need special aquarium silicone, you just need non-toxic silicone which you could buy from any DIY store (B&Q or Focus etc).
 
#3 ·
no you don't need to use the silicone that they sell at the lfs for 5 bucks for a small tube, you can buy GE silicone 1 for windows and doors. its the same stuff sold 100% silicone. just make sure there are no mold/mildew additives in it and your good to go. I've sealed many tanks with this stuff.
Also yes you can use black silicone on the outside to hold the trim, if you can find it i do believe they sell 100% black silicone that is even safe for the inside. my top fin 120 gallon tank is sealed with that stuff.
 
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