Quote:
Originally posted by hamdogg08
Not to jack your thread, but would 3 1" holes be too much for a ten gallon tank? You seem to be the hole drilling expert on here! 
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I think you'd need to space them as far apart and from the edges as you can, then when the bulkheads are installed it should help some with strength... Thin glass is more difficult not to chip but certainly not impossible. I had an old 10 gallon I practiced on first and never broke or cracked it. Practiced both with a rotary tool and the hole saws I use now with few problems.
BTW - 1" bulkheads take a 1 3/4" or 45mm hole.
Tim 
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"The moment you doubt whether you can fly, you cease forever to be able to do it..." J.M. Barrie
Current Tank Info: 210 AGA RR, Apex, 3x Kessil A360W & 2x 80W T5s, GEO 618 Ca Rx, BM220 CS2 skimmer, Tunze 6100s, 42" ETSS/AE Tech refugium/sump
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