I was told that turning mh off and on frequently like that is hard on the bulbs as well as the ballasts. Someone correct me if i'm wrong please. I would have them turn on for just a couple of hours where you know it will be the middle of your lighting period, increase the time by 20 more minutes each day until you reach your actual time they will be on every day. 10 minutes earlier and 10 minutes later each day. Most people on run mh's 6-8 hours per day. Also think that it will stress your fish out if the lights keep going off and on. Everyday when my mh's turn on there seems to be a burst of energy with the fish for a couple of seconds (freak out). And yes heat will be a bit of a concern during summer months.
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04-22-2010, 03:36 PM
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