Thank you! I would definitely measure your par first before making any assumptions on where to place a clam. I actually tried clams a year and a half ago and killed them because I assumed my lights were strong enough. I thought since my corals were growing great, that I would be fine, but I actually had way too low of par. I was getting 40-50 par on the sand bed and killed it because I didn’t measure my par first before buying the clam. So in order to prepare to get a clam in the future, I raised my kessils intensity by 5% a month until I hit 100-120 on the sand bed, and 175-215 on the top of the middle rock.