I think the 1hr on / 1hr off is more to prevent UV shock / light burn to corals who are "tuned" to a certain amount of energy coming in at them.
The tank's adjustment is going to take a little while. But it will adjust. And yeah, the usual recommendations about cyano will help ... skimming, excess nutrient management, water flow, etc.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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