gonzalez78 Posted November 21, 2012 Share Posted November 21, 2012 I want to drill a 20 long to use 1" drain and 1/2" return.... Will be sumped to a regular 10 gallon.... Just wondering what size in mm hole would I need for each.... Thanks. Link to comment
uglybuckling Posted November 21, 2012 Share Posted November 21, 2012 http://www.bulkreefsupply.com/diamond-coat...drill-bits.html Link to comment
gonzalez78 Posted November 21, 2012 Author Share Posted November 21, 2012 http://www.bulkreefsupply.com/diamond-coat...drill-bits.html 30 mm and 45 mm it is.... Thanks uglybuckling Link to comment
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