So the center hole is the inlet for a closed loop system?
The outer holes for the overflow?
I still don't get it. Seems like the holes are very low in the tank and very close together. I must be missing something.
Or that might not be it at all.
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150 gal Custom. Born 5/7/07. 50gal, 29gal, 20gal Sumps. 30gal Frag Tank. ETSS 800 Skimmer, Deltec APF600 Skimmer. PFO Solaris Lighting on Display and Frag Tank
My Tank Thread
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