Me? I have drilled at least 100 holes. I did all the tanks that were at Joe's Ones Stop Reef Shop when it was in Chatham. I have done my own drilling since my last 120. I have 5 hole in my 120, 2 for water to exit the tank and 3 for drains out of the external box. I drilled
@heath 125 tank and several others that I have lost track/count.
How many and what size holes all depend on what set up you want to do. I reiterate my suggestion of the eshopps overflow or even the ghost overflow as noted. There is very little in tank foot print and will not cast a shadow.
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