We bought our house last year which has a vinyl liner in ground pool. The steps have become extremely yellow and I tried Jack's Magic step cleaner. At a cost of $40 it didn't touch the steps. I read a thread that talked about magic eraser but my pool has water covering all but the first step. I'm just learning about pool care and chemical adjustments. I was using the test strips but find it much easier to take a sample to the pool supply and let them tell me what to add. I shock it once a week with a 1 lb bag and use chlorine tablets at the filter. Not sure how often to add baking soda.
Anyway, my main concern right now is how to clean my steps with water in the pool.