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01-07-2008, 04:09 AM
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questions re: hole drilling
I'm concerned about the integrity of the glass of my 3' cube in regards to having holes drilled for a closed loop. The tank is 36 x 36 x 20" tall and uses 3/8" glass. I was hoping to drill 3x 2.5" holes for 1.5" bulk heads on the back glass, plus another of the same size for the overflow and one more smaller hole for the return.
The overflow and return holes are top right and top left, and don't concern me so much. The closed loop holes I though would be evenly spaced across the back but staggered slightly in their hight. I'm concerned about whether or not three 2.5" holes in 3/8" glass that are 9" a part will create week spots running across a 36'' pain? Does anyone out there have a similar tank that they've drilled closed loops into that can ease my mind about this?
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THE BARQUARIUM: 55 gallon cube - 50 lbs LR - ASM G3 skimmer - 30 Gallon sump - 22 Gallon refugium / frag tank - 4x 24 watt HO T5's - Mag 9.5 return - Pin Point PH monitor - 400 watt XM 20K MH in Lumenarc reflector - Dual stage GFO/NO3 media reactor - 6 stage RODI auto top up -Wavemaster Pro running 3 Koralia 2's. Fully stocked with fish, corals and usually some fine scotch http://www.canreef.com/vbulletin/showthread.php?t=55041 Last edited by danny zubot; 01-07-2008 at 05:26 AM. 
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