Sponge Posted November 28, 2015 Report Share Posted November 28, 2015 Just needing a tube of aquarium safe silicon which can I use which is cheap as I have a crack in the bottom of a tank don't think it lacks but just want to cover in silicon to be safe bat which one can I use ? Quote Link to comment Share on other sites More sharing options...
Shilo Posted November 28, 2015 Report Share Posted November 28, 2015 Most will mention that they are aquarium safe on the front, normally acetic and smell of vinegar. Don't use ones that contain fungicide. I used Selleys Glass silicone. Quote Link to comment Share on other sites More sharing options...
livingart Posted November 28, 2015 Report Share Posted November 28, 2015 It s best to silicone a piece of glass over the crack as well Quote Link to comment Share on other sites More sharing options...
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