I just recently bought a very healthy looking Squasmosa clam from my LFS. It is about 3-4 in in length and had excellent mantle extension with no pyramid snails that I could visibly see. At the LFS it was on the sand bed with a single MH bulb for lighting (unsure of wattage). Once I got it home I properly acclimated the clam with floating it to water temp, then drip method for about an hour. Once this was done, I placed the clam in my DT (without subjecting the clam to air, I placed it in the tank). I placed it on the sand bed. I currently have the Current Nova Extreme Pro 48 in model with 6 bulbs. All of the bulbs except for the actinics have been upgraded to 2 12000K bulbs and one 15000K bulb. In the last couple of days I have noticed that the clam is rotating itself on the sand bed. I have no direct flow going towards the clam and am unsure of why it is trying to move. What should I do? What does this mean for the clam? My params are stable: temp 78-79 ph 8.0-8.2 calcium 460 alk 9-10 nitrates 0 nitrites 0 I also have a huge LTA on the sand bed that has not moved since being in the tank and is growing very fast. I also have a ton of SPS, LPS, and Softies that are showing amazing polyp extension and growth, so I do not think that it is a water quality issue.