I have a question though. Lastnight I cleaned return pump and done a 20 gal water change. After all that i had alot more flow hitting the clam. Im assuming iys from return nozzle and pump being cleaned. Well i noticed one side of the clam skirt being lifted up from current. I picked it up but it had it's. Feet hanging from bottom so i immediately just sat it back in sandbed. Now will that hurt it since it wasnt attached to anything? Also if they dont like the flow will they move or should i move it.