Hi Dan,

The water was very murky, milky, cloudy, unclear, with a slight yellow hue to it. The stringy things were about an inch long or so on the pool floor, and they were a yellowish green color. I wish I had taken pictures of it, but unfortunately I did not.

I have been battling for a week now with tons of bleach. The water looks about 90 percent better. It still is not sparkling clear like I normally have it though. It is slightly cloudy, but just barely. We have a sand filter. Strangely enough, the pressure is not going up much on the filter. I have backwashed once, but it does not seem to be going up at all. This may be due to the fact that I am not manually vacuming the pool but using a robotic cleaner (Dolphin Diagnostic).

The pool cleaner also climbs the walls. The filter bag filters down to very fine dust and algae according to the manufacturer. I did manually brush the pool once to get up anything I saw that the cleaner may have missed. The sides and bottom look clear of any algae.

I don't know how to get back the crystal clearness. It is getting frustrating. I honestly don't know if it was mustard algae or just the regular green stuff. Now the weather is cooling and we will most likely close within a few weeks.

Today I did add about 12 oz. of Polyquat algaecide. I know it doesn't kill, but will hopefully prevent more from coming back.

If you have any suggestions, by all means feel free to let me know. It has been very discouraging to lose a whole week of swimming time to this battle. Our kids have still gone in even in high chlorine levels and when it was icky looking, but with the solar cover off, the water is really getting chilly. We are whimpy when it comes to cold water.

Thanks for your help,

Sandy Dittmer