How to make sure you can drill bulkheads?

  • How do you all make sure that the glass you are going to drill, is well, drillable? I have looked at a few tanks and there isn’t any single way to see if they are tempered or not which is annoying.


    Any tricks or tips to see how I can tell without actually drilling or damaging the bottom (since if it is tempered I’d rather not have to replace the glass just for a test).


    Thanks fish fam! :D

  • From a friend who does this all of the time;

    Quote

    Put polarized sunglasses on and look at a known peice of tempered glass compared to a known non-tempered peice of glass.



    I believe it looks similar to the reflective rainbow I see when I look at my trucks side glass which is tempered.I believe it looks similar to the reflective rainbow I see when I look at my trucks side glass which is tempered.

    Otherwise I’d highly recommend on calling the manufacturer and seeing what they say.