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I have to disagree.

During the cycle you're trying to grow bacteria. Algae utilize many of the same nutrients as the bacteria you're trying to grow. This creates competition, and can reduce the speed at which the bacteria grow. If you keep the lights off, you do away with this competition, and the bacteria get to use all of the available nutrients.

In a new tank set up there should be very little phosphate to worry about. Unless you're curing LR with the cycle. Very few people do that any more. The little phosphate that is in a new system, is needed by the bacteria.

There's no need for water changes during the cycle either. You need the nutrient levels to climb so they'll fuel the bacterial growth. Changing water reduces nutrients and is counter productive.

Peace
EC
If you keep your lights off all that beneficial bacteria will die off once the lights are on. ...
 

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I run lights on during cycle, I don’t believe lights out to be an effective way to eliminate unwanted algae or affect the bacteria , I have always ran them during the cycle for as long as I been keeping marine tank. I may run them for a shorter period and now since LEDs, not as intense.
It's been a decade since I've been in the hobby. Caught a deal on a drilled 120 with a sump lights rock etc...but these LED lights are bright. I used to thing HQI DE were bright..
 
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