I have been fighting my green pool for several weeks now. I have a 25K kidney shaped vinyl liner pool. I have been following Leslie's advice and I think even they are scratching their heads now. I have used three bottles of algaecide and over a hundred in shock. I have a SW swim pure system an apparently my box is not working so I have had to manually add shock. This led to the problem in the first place because I didn't know it wasn't working. I don't want to spend the $560 to replace the box right now. I also just replaced my filter sand and now I am getting sand in the pool. I have an old Fox filter(300 lb) and I was very careful not to damage the laterals. But I assume that is where the sand is coming from. In just the past week I added soda ash to up the pH to 7.4, another bottle of algaecide, and then 4 bags of shock the first night, 3 the next, 3 the next, and 3 the next. Only a little change occurred. I added some blue stuff to clear up the cloudyness and little change occurred.
Here are my pool numbers as of yesterday:
CA hardness 210
suggestions please? Any ideas about good prices on salt water chlorinator box for swim pure? or filter?