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Unread 10/25/2013, 08:51 AM   #8
EDJFA
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Join Date: May 2011
Location: St. Charles, MO
Posts: 1,025
I'm in the too late now camp with ca1ore. Need to work with what I've got.

Is it possible, maybe advisable would be a better term, to add a third and maybe fourth hole in each overflow to set up a dual BA system with the fourth hole being for the return? Quick measurements (eyeballing really) tell me that the current holes are 1.5". There's a bit over 3" between them. If I drill two more holes, one 1.5" for the emergency drain and a smaller one for the return, would that ruin the integrity of the bottom of the tank in those areas?


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