You can start with short cycles of the Par bulb and increase a little at a time. You can adjust the height of the light and drop it a little at a time. Also you can make a couple of screens out of the black window screen that will help to filter some of the light from hitting the coral straight on. Remove a layer of screen each week until you are running at full power and time.
Either one of these should work.
John
"Critics are men who watch a battle from a high place and then come down and shoot the survivors." Ernest Hemingway
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