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Discussion Starter · #1 ·
I have a 20watt CFL 6500k on my 11g fry/Babaulti tank.
Light is about 3'' above water surface ,and at 13'' from substrate.
I also have a glass lid covering the tank.
I've read somewhere on this forum that a glass lid would reduce PAR by not more than 10-15 percent.
Am I in the low light range with this setup?
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