i would be worried about evaporation if i were you on such a small volume of water such intense light
also my system which holds about 120G of water total maybe 130 has a glass top and the 2 -150W MH evaporate 1G a day and raise the water temp 2 degrees over the 6 hours
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250G DD LED SPS R.I.P.
180G LED SPS
80"x36". 300G custom build
Owner of Mountain Ridge Heating and Gas
Class A gas fitter, HVAC
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