Clam brown
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Not enough light most likely.
Crabs McJones
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^^Agreed. What lighting do you have it under?
Crabs McJones
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Well to determine that, can you tell us what light, and what light schedule?
Do you know what par your getting where the clam is placed? I agree with the above, loosing color due to lack of light and possibly spectrum. I'm not familiar with that light so I can't give suggestions on it.
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Tank might be too deep for the 26s to penetrate...i run 26s and 52s on 2 tanks...deepest is 18 with 52s over it and i have 2 squammy s on the sb doing well at a little over 200 par. I only run my white at 45%. . Can you borrow a par meter...
Is it growing? If so, then you have enough light.
Clams like daylight, IMO. I would imagine that turning up the green and red will help. There are blue proteins that thrive with red light.
Clams can get too much zoox with higher levels of building blocks - they create a bit more zoox and the sugars can build up and you lose color. Browing of coral and clams can sometimes be from higher levels of N and P, but not so high that they start to inhibit growth. While I find clams to be very tolerant of N and P levels, they can be more colorful with detectable, but low levels. What are your N and P levels?
Clams like daylight, IMO. I would imagine that turning up the green and red will help. There are blue proteins that thrive with red light.
Clams can get too much zoox with higher levels of building blocks - they create a bit more zoox and the sugars can build up and you lose color. Browing of coral and clams can sometimes be from higher levels of N and P, but not so high that they start to inhibit growth. While I find clams to be very tolerant of N and P levels, they can be more colorful with detectable, but low levels. What are your N and P levels?
You should have plenty of light with your light schedule especially with your white channel cracked so high. I've never seen anyone run the whites that high but your other corals look good. Sorry I wasn't more helpful.
