Drilling, should I be concerned about strength.
So I've done all the test and the bottom of my tank doesn't appear to be tempered so I'm going to attempt drill it. Now I'm kind of wondering if I should be concerned about these holes weakening the glass and causing a issue down the road. I plan to have a centre over flow with a 1.5 drain and two 3/4 returns. Will these holes cause any issues of concern related to strength and possibility of something happening down the road.?
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