24/7 with a 25 watt energy saver bulb from Home Depot.
A month ago I had the bulb on for 16 hrs at night in reverse of the halides over the main tank---so as to minimize the nocturnal shift in pH. But since I have had it on 24/7 its tripled its mass in one month
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"evrr bean to sea Billy--evrr smelled a fish?" "Aye capn..experience is the best teacher"
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