Nuked your corals?

[Cory]

Why is it that we can nuke our corals with light when some coral reefs are exposed to full sun in water as deep as our tanks and dont get nuked?

 

[rapid]

artificial VS real ?
sudden shock VS being use to the light (Accumulation)

different strengthens in the sun VS LED or artificial light ? I assume Artificial light can be more powerful for longer periods then the sun. eventually the sun goes down or gets shadded by clouds, fish, storm ?

 

[Dal-Reef]

Why is it that we can nuke our corals with light when some coral reefs are exposed to full sun in water as deep as our tanks and dont get nuked?

Thanks for posting this was wondering the same thing. Maybe will get some more thoughts on it

 

[shred5]

A big part is what they are acclimated to. Mostly they bleach because of a change in lighting. A jump up.

That said also the sun does not sit at high noon all day. Water surface can also reflect allot of light especially when the sun hits it at angles. Through out part of the day a coral can self shade. Basically in the morning one side of the coral is lit and the other side in the evening.

Light levels also decrease pretty fast in the ocean as you go deeper. so you have to look at what depth a coral comes from.

Some SPS sit in direct sun out of the water at low tide and they can handle allot of par. If they are removed from that light for a while and put in lower light levels they will adjust. Throw them back on that reef in direct sun they would probably bleach without acclimation.

 

[rapid]

 

[rapid]

A big part is what they are acclimated to. Mostly they bleach because of a change in lighting. A jump up.

That said also the sun does not sit at high noon all day. Water surface can also reflect allot of light especially when the sun hits it at angles. Through out part of the day a coral can self shade. Basically in the morning one side of the coral is lit and the other side in the evening.

Light levels also decrease pretty fast in the ocean as you go deeper. so you have to look at what depth a coral comes from.

Some SPS sit in direct sun out of the water at low tide and they can handle allot of par. If they are removed from that light for a while and put in lower light levels they will adjust. Throw them back on that reef in direct sun they would probably bleach without acclimation.

1