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you can start with 36w x 2. observe your plants. if they are not growing well, add more lights. you can always remove one tube from your light set.
My tank water volume is 90cm x 30cm x 30cm...
I have 2 units of (36W X 2). Is it too much light-6.7WPG?
if 1 unit of 36W x 2 which gives 3.4WPG is it enough for plants that require high light?
you can start with 36w x 2. observe your plants. if they are not growing well, add more lights. you can always remove one tube from your light set.
thomas liew
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