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Looking to modify a biocube I have. So far I have removed the rim, and side trim. I was thinking of setting it up with a coast to coast overflow but I am really uneducated when it comes to drilling and the basic mechanics of sump setup. I left the false wall in there until I make up my mind. So what do you guys suggest? Where should I drill. What size holes what size return pump what style of overflow ......So many questions.
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