Hello from NJ. Bought the House in January 2013. Had a pool company on call for chemical issues. First season revealed a very old liner and heater. We had to replace the pump immediately. Second season we were losing water by the foot. We patched the liner and had to repair sight glass on the filter. We also replaced the heater and installed a Polaris. Third season we replaced the liner. This revealed that our 1970 pool is actually cinder block. Fourth season we were going to replace our slide but found it cost prohibitive. We still can't get great water up to it. We made a major repair to the filter. Now, I have picked up quite a bit of knowledge from my pool service and am ready to maintain this pool on my own. We opened Monday. Today I have mostly clear water. Hoping the filter takes me the rest of the way. -Mary Beth