How much lighting is too much?

[fishdude]

time to instigate.

When I'm at Wias I notice under his front window display he has a very bright lighting system and some of the corals (over the years) were not too happy.
Also in my travels I have noticed that my "candel light" coral would open up more when it was lower.

and also. I had a clam about half wat up the tank. was a brown type clam. that took hold,did well for 4 weeks ans then decided to uproot itself and go to the bottom of the tank. This clam was atatched to the rock I put it on originally; I tested it. But he went tp the bottom where he likes it. Oh and took a few steps alond the way.


So back to my original question.

How do you know when your corals complain.

I squint when there too much light.
you?


salute to all the fish/invert lovers

FD