Acro Bleaching!

[clown and friends]

Hi guys,

I decided I was ready to give a few acros a try in my biocube 16 with an AI Prime HD. Finally felt I had the lighting and stability for them. Anyways clearly I didn't cause 1 of the 3 I have is mid bleaching as I type this. Other two acros look good and I actually have a monti cap I've kept for a few months without issue. No other corals or my BTA look out of the ordinary. Parameters are as follows:
Salinity: 1.025
Ammonia: 0
Nitrite: 0
Nitrate: 2 ppm
dKH: 9.0
Ca: 460 ppm

Any thoughts? One thought I have is that I put them all on the sand to acclimate them to the light and moved 2 of 3 up and was planning on moving the 3rd but forgot about it for 2 days until I noticed it bleaching...maybe just not enough light?

 

[pirate2876]

How long has the tank been running with livestock? Bleaching or sloughing off skin(RTN)? What temp is tank and how steady is that?

 

[clown and friends]

Sorry forgot to add the temp its 78F and pretty steady! Tank has been up about 7 months, no change in livestock other than corals in months. Attached are pictures of all 3 acros in their current state:

 

[ocean gems]

Might be lighting

 

[clown and friends]

Would that cause it to bleach over the course of say 12 hours? That's how quick it happened. Other acros are still alive and colorful

 

[SeaDweller]

That looks like RTN to me, not bleaching.

It could have been on its way out already and you just got unlucky.

 

[ocean gems]

Cut off the run part

 

[clown and friends]

Cut off the run part

That pic was taken almost a week ago, that last bit with color bleached in less than an hour after that pic was taken so it is gone now.