Maxima Clam Question

[pinkreef]

I checked for param snails a couple of times now and havent seen any. it does react whenever a fish swims over it ( all day ) it may tire it out. my lights are old so i will get new bulbs. if i could keep it a few inches off the ground the ss goby wont spit sand on it anymore. my phosphates are high right now since i moved my tank a few months ago. im using seachem to bring it down. thanks for the help