To truly determine what to do about your pool, first you need to figure out the Pool chemistry (use the test kits). There are many factors as to why the pool is murky - too much chlorine, not enough chlorine, dirty filter/sand, rain,and the biggest culprit is algae - second biggest culprit is dirty filters. You can use all the chemicals,in the world, but if you don't clean the filters, the chemicals won't help. You need to maintain all the pool equipment just as you would the pool water.
We, here at Island Pool Supply, are planning a "Pool Chemistry Seminar" for sometime this early fall. If this is of interest to anyone out please give us a call with your name and phone number.
Don and Julie