Ahh, that would make sense - though in my tank, I have so much flow on/near the surface I doubt there is an increased amount of organics on the surface versus just below the surface. Certainly worth keeping in mind.
I've got 8mm bits (for the slots) and a 45mm bit for the overflow drains coming - I'm hoping to do the drilling in the next week or two. I am thinking of adding some holes to the back of the tank as well for a possible closed loop. How many holes can I have without affecting tank integrity? These would be 45mm holes for a 1" bulkhead, and keep in mind the back of the tank will also have the slots at the top of the tank (which I dont think should affect integrity much).
Thanks,
Bob
Bob
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