<a href=showthread.php?s=&postid=11219677#post11219677 target=_blank>Originally posted</a> by aquarius77
Maybe use eggcrate over the tank. Possibly a few layers at first removing one after a few weeks and a few weeks later take the other off. You could also raise the light fixture and slowly lower it over a month. You could also do both, it never hurts to be carefull when making a drastic change like that.