Question - When people talk about depths of MH penetration, is everyone considering just the depth of the water from the rim of the tank, or from the bottom of the light source as it sits/hangs into the tank?
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- Greg
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
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