Today is the day to close the pool. It appears as if algae is just setting in. When I open it in the spring, I am usually dealing with some very dirty water. It takes a week and I have it to where I can see the bottom. My question, what happens if I close the pool now? Does algae grow like a tree and I will be dealing with even more matter to take out in the spring? Or will algae just be present...freeze off in the winter...slam it in the spring...and water is back to normal? Wanting to know what problems I will be creating for myself. Thank you.