You will get varied responses on this forum. In the wild, they are getting well over 1000 PAR. Here's an example of people fighting about PAR reqs for a maxima:Thanks a lot. Yes it is a maxima. I will check out the book you recommended. It was on a rock, but you can’t see it because my goby has been burying that rock for some reason.
I didn’t realize clams needed so much light. With my MH lighting, I have often ended up frying anything other than SPS in the upper half of the tank.
I have a good PAR map of the tank. What is a good target for maxima clams? They are such cool creatures and I’d really like to keep one if I can ensure its wellbeing.
Par rating?
Does it take a long time for it to grab hold if it’s happy? It's all depend on each clam, my small maxi anchored to the rock overnight and completely secure to that spot like super glue within a week. While my 2 Derasa stopped walk around but they do not anchored to anything LOL All the Maxis...
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I think giving it the maximum amount of light you can is best for the clam. I doubt you can give it more than it can handle.