Thread: What is too much PAR?
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Old 03-09-2006, 06:33 PM   #6
jackson6745
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Quote:
Originally Posted by joetbs
Probably more to do with photoperiod then actual PAR. If you're running them for 12 hours, you're going to do more harm than good. Also, there are many other factors with SPS color other than lighting.

joe
Agreed. In my tank I use my torts as a phosphate guage. If they get the greenish tint to them I know my po4 is climbing a bit. Russ in a low nutrient tank, with an extended photoperiod (even with just T5's), you could fade the coral colors.
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