I have had this tank running for an over year now just recently had some issues with a few of my Acropora. Seems if some had some burnt tips recently and some having some minor flesh die off. I tested and the only thing out of range was phosphate which was .23 ppm. I have lowered it over the last month to about .12. some of the acros did not get bunt tips. I have not changed much recently other than adding a couple more lights to the display but I have ramped those pretty slow over the last couple months and the majority of the acros are getting anywhere from 250-350 par. I have recently added a refugium and noticed a difference in the tank overall. Now my main question is does elevated levels of po4 burn the tips of my acros or was it the lights? I move thing pretty slow in this tank focusing on stability and my Dkh does not move more than .05-.1 during a 24hr period.
Dkh 8.4
Ca 430
Mg 1400
NO3 6
Po4 .12
Ph 8.1-8.45
For flow in the display I’m getting around 51x turnover so I don’t think flow is a factor.
Dkh 8.4
Ca 430
Mg 1400
NO3 6
Po4 .12
Ph 8.1-8.45
For flow in the display I’m getting around 51x turnover so I don’t think flow is a factor.
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