I posted a few days ago about bleaching acros. I got 10 acro frags yesterday and then a huge colony from work that was partially dead. I didn't run the MH's at all yesterday just to give them a chance to better acclimate and today I only ran them for 4-5 hours. The 10 frags all seem ok so far although 2 are a little bleached from shipping and may not recover. The larger colony was browned out but after only a few hours a couple of the tips started to bleach.
All frags were placed on my sand bed which is about 35" under my CV 10K bulbs. It was suggested to me that maybe I got some of the bad CV bubls which could be putting out too much UV and damaging the corals. All my other established corals are doing great but it just seems new additions have a really hard time acclimating to my lighting.
The bulbs are almost a year old and I plan on ordering some CV 14K bubls next week.
All frags were placed on my sand bed which is about 35" under my CV 10K bulbs. It was suggested to me that maybe I got some of the bad CV bubls which could be putting out too much UV and damaging the corals. All my other established corals are doing great but it just seems new additions have a really hard time acclimating to my lighting.
The bulbs are almost a year old and I plan on ordering some CV 14K bubls next week.