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If you need the fixture 12" above the tank you need to be looking at the ATI Powermodule.
I did a check last night and with the fixture in air about 17" from the sensor the PAR was 249, with the fixture raised 6" the PAR dropped down to147. Raising the fixture 23% decreased PAR by 41%.
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Grim tells it like it is.
Last year the SEC was the strongest conference but overrated. This year they were just overrated.
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