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Originally Posted by jackson6745 |  | | | | | | | | | 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. | |  | |  | |
The nutrients are definitely low. PO4, NH2, NH3 & Si all read undetectable. I do keep my T5 daylights on for 12 hrs and the actinics for 14 hrs. And as you've already heard, the lights were basically right on top of the water.
Now that I've raised the lights, do you recommend shortening the photoperiod as well? If so, how long would you suggest? Should I shorten the photo period an hour for each of the days/actinics for a week at a time and see how it progresses? Once I hit the point that they look great, go an hour shorter, see what happens and if it's not good, reverse it by that hour?
Guess I'm answering my own question. Trial and error? Whatcha think guys.
Russ