Help with capnella Keny tree) bleaching.
 

My once flourishing population of trees are now bleaching. The steup has been in place for 2 yrs and the Kenya trees were always dropping frags and growing like crazy, but now are bleaching. I had gone quite awhile without replacing my bulbs and have since replaced half of my vho's with new bulbs. I know change in lighting can affect any coral. I have had these trees for almost 4yrs total and were bulletproof. The rest of corals are flourishing while the trees are bleaching. I don't have most of the parameters but heres afew.

salinity 1.025
temp 82F
nitrate 0
ammon 0

will pst more when able to

Any experience with this would help.

Thanks, Jeff