I bought 2 T Max's about a two weeks ago. They both react very well when there is any disturbance to the lighting they receive (such as a fish swimming by). I have quite a few active fish constantly swim over them giving them a shadow for a couple seconds. Both T Max's close very quickly. It would seem to me that this would use up a lot of their energy to keep opening and closing. Will this energy use hurt the clams over time?