Long exposure to air cause bleaching?

[micrors4racer]

I have 2 frags of birdsnest exposed to air for about 20-30 min (forgot I took them out of the water while moving stuff aroudn :worried2::sad2. This morning they just didn't have polyp extension but when I got home most parts of them were white. All other corals (soft, zoas, LPS, and one other green polyp birdsnest) are fully open and doing well.

 

[str8leg]

I was thinking the same thing, but if during low tide why do some coral stay exposed and still thrive?

 

[jciotti]

Doubt it, I leave my corals out for more then an hour during water changes.

 

[sanababit]

i doubt it too, i have some corals stay out of water for a couple of hours and still live

sana

 

[Reeferland]

I was thinking the same thing, but if during low tide why do some coral stay exposed and still thrive?

different environment. yes most of the time the sps will be okay but sometime some will loss its color and turn brown or even bleach.

 

[micrors4racer]

Air temp was around 70 degrees when they were out. I will check water params.

 

[micrors4racer]

Current pics

Ponape

Ponape a month ago or so

Only initial problems with this one when I got it in December is the bottom turned white possibly due to being a small colony so the bottom was covered and went from MH to T50HO but everything else was okay I think.

Purple frag

Green that is still alive

The ponape still has some polyps on it and doesn't seem to have bleached more, do they re-colonize the skeleton if they do make it? I'm pretty sure the purple bridsnest is done for.

FTS from a month ago

 

[saltygeek]

I would imagine at low tide they would get some type of spray keeping them moist.

 

[micrors4racer]

I kind of hope that it was just leaving them out was the only problem and not a water chemistry problem.

 

[Reefer08]

Ive experienced bleaching with my SPS when left out too long and it was cold outside. The cold air really stressed out the coral and caused them to bleach. Color came back to normal (sometimes even better than before) after about 2 weeks.

 

[elijaher]

Ive experienced bleaching with my SPS when left out too long and it was cold outside. The cold air really stressed out the coral and caused them to bleach. Color came back to normal (sometimes even better than before) after about 2 weeks.

Cold air will stressed them mine was exposure to cold air.

 

[SanJuan]

During my water changes they are exposed for a good time, but I do turn the lights low so they don't dry out completely/too fast, and I also give them the occasional splash just to play it safe.
I concur that cold air is detrimental to their health.

 

[micrors4racer]

Alright well the purple nest is totally dead. But the ponape colony still has about 65% of its polyps, how do I help it recover? Or do nothing and just keep things stable?