I have a friend who is a single mom. She has been struggling with her pool for months. She has a 15,000 gallon inground plaster pool with a DE filter. We are in the desert southwest, hot, sunny and at times windy. She uses a pool service (not very competent) as well as taking water to Leslies for testing. 3 weeks ago she had green algae (diagnosed by the service guy). He said their were other issues (doesn't remember what) as well and had her drain close to half of the pool. She refilled the pool and the water was fine for a week or so, but now it appears (I saw it yesterday) to have mustard algae. The stuff is slimy and the water is dull. Leslies suggests using Yellow Out - I have convinced her that, with all of the wonderful help on this board, that she probably does not need it. She only has a basic kit so I took mine over and tested - here are her numbers:
I don't know why I didn't test the TA - I will do that today. If I'm reading the stickies right, we need to get her chlorine to 27 - keep her PH at 7.2 - but for how long? Does she need to brush, vaccuum? Is it necesary to clean out the filter? Once the pool is under control - she will switch to the BBB method. I have convinced her to do away with the shock and pucks.
Thank you all again for your help.