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most keep blues together for the dawn/dusk effect
Icecap SLR more directed or the tek2 wider area. Both seem to be good. Using the SRL's right now may change to the teks for the middles and icecaps...
Hows your alk and PH?
You can't go by watts on T5, higher watts just means it goes across width of the tank more. the same spot with 4x24w is going to get almost the same...
If you have any air in your overflows thats also going to drasticaly cut down on the flow they can handle
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