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- May 12, 2020
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So, I may be getting a 90g tank in the near future... My question is can I light a 90g (48L x 24H) with a 300w black box (30" wide) OR two Kessil a150Ws. Those are the lights that I already have access to. I'm trying to get this done on the cheap, so I'm hoping the lighting I have will suffice.