I have been on the forum learning alot and with all the information I have found, I think I have Mustard Algae. I have been fighting this for about 3 weeks to a month now and still the same thing. I can get the pool water somewhat clear but not sparkling clear like it was. This is my first year with a pool and am really getting frustrated. I order the TF test kit and thought, once I get my correct number I will get it all worked out. Have been shocking the heck out of my pool. Have maintained FC at 20 to 25 ppm for the last 4 days and before that it stayed 15-18. The FC also holds overnight and has been for about 2 weeks now, but every evening when I get home its the same. I can see the bottom of the pool but there is a layer of "dust" on the bottom. When you brush it, it looks like a cloud of dust that disappears and the pool is cloudy. I get on hear everyday to find out if there is something different I can do. Here are my number.
So from what I have read on different post is, if it is mustard algae, I need to get my FC at 29 and keep it there for 24 hours. I also read to try polyquat 60, that could help and something called flox "I think" to help filter it out. I backwash every evening to what seems to be clear, but do it anyway, we have a skimmer sock, which sometimes has a greenish tint to it. Please someone tell me what I need to do to get this under control.