sps dying?

[reef_dude76]

I have two different species of acropora in my 58 gallon. Lighting is 175W 10K MH and two 55W actinic PC. I have had them about a month. I placed them in the bottom of the tank as the lighiting they were unser at the LFS was dimmer than the lighting I have. MY turnover is about 800gph through a seio pump and 800gph through my sump. The probelm is that four tips on one coral and two on the other are starting to bleach. Two tips are ghost white, but still have their polyps extending from them. Last time I checked perameters everthing was fine zero NH3, NO2, NO3. This was about a week ago. Temp 82, SG 1.024. Calcium should be fine as I have coraline growing like crazy and dose with lime water.

Help.

 

[fragaholic]

Thats usually just a sign the it is growing. If its just the tips that are white and there is still PE I would bet its just new growth

 

[reef_dude76]

Oh, cool. Yes, there is still polyp extension even in the tips that are white. I've never really kept sps for any length of time, so if it is new growth then I may have finally designed a system that will lwt me keep sps.