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OMG, drilling glass holes in perfectly good tanks for the first time is nerve wracking
I did 4 test holes on some scrap. Then 1 hole in a Chaeto tank, 1 in a new water tank and 1 of 2 in the sump.
I had to take a break before I rush the last sump hole
And although more could be said, I'll leave it up to the more brave members to do so
