I have something similar to wedding cake steps but smaller. My pool has been clear all summer. I am currently draining the pool so we can install a new liner due to some major tears and we will be renting out the house in Jan. Anyway, I unscrewed the stairs from the deck and pulled them to the side and GROSSNESS came pouring out of the steps! Dark green algae water was inside the steps, behind and under the steps and on the underside of the steps. All summer I have thrown a gallon of bleach ON the steps during my normal chlorination cycle and swept behind them. The past month we have not used the pool but maybe twice. How do I go about getting these steps to not hold so much algae? Like I said, the pool has had NO algae probs all summer and it has been a HOT one here in southern Virginia! I don't want our renters to have problems with algae, although it will be in the contract that they will have to take care of the pool if they want to use it.