I have a 18x36 29k gallon vinyl liner pool with a AutoClear saltwater generator. Last week the saltwater generator quit working. I suspect that the cell has reached it's end of life, however the system has been discontinued. I can get a replacement cell, but I didn't want to spend money on a discontinued system. I purchased a new CircuPool RJ45 which I will install this weekend. In the time being we have been putting chlorine tablets in the skimmer and everything was fine until the last couple of days. The water is clear, however we have begun noticing a little black algae growing on the liner. We tried brushing it but it will not come off. I told my wife to get some shock and shock the pool today. My question is that once I get the new SWG online, should the black algae begin to fade away? Any help would be greatly appreciated.