So I will not be opening the pool this summer! It was put to bed last Sept. with clear balanced water, with non chlorine shock, sequestion agent and algecide. It is covered with a black tarp. Usually opens up with clear water. However I'm worried about leaveing it now till next summer. It will see some very hot weather!! Should I be trying to add something to water?? or will the lack of light keep the alge at bay??