problem with refugium lights

nitrofish

reefing again!
I have those homedepo floodlite fixtures for lighiting my fuge and now it seems only 2 out of the 3 loops are lighting. I flicked it off and on but that didn't help. do you think it just needs a new bulb or is there a balast problem?
 
sometimes mine takes 1-2 min lighting a coil or 2 at a time.great bulb month later gotto do some thinning.
 
Are you guys talking about the Lights of America 65 watt fixture? How long do you leave it on? Reverse photoperiod?
 
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