I am a newbie. I have searched the forum but have nothing for this issue. I live in Florida. We had solar panels put on in February. Everything was fine for about 2 weeks until I noticed that the chlorine tablets had not dissolved. They usually only last about 1 1/2 weeks. I shock once a week and clean the filter and put chlorine in every 2 weeks. Everything seemed okay. We call the solar guys, they said a valve was broke, they replaced it. 2 more weeks go by doing the same thing and the same issue. We call again, they said the chlorinator was not working and replaced it. All of the sudden the pool is green. Call again, they came out and said there was a block in the tubing. Now, 2 weeks later I am fighting this algae everyday. It has stained the bottom of the pool (which is not even a year old). The pool will not hold chlorine. The pool guy told me use Yellow out and some type of super power chlorine granules. This got most of the stains out but not all. I am now having to vacuum the pool everyday, shock everyday (with at least 2 bags of shock) and now the water is blue and cloudy. The chlorine tablets are still not dissolving. I mashed them into smaller pieces hoping this will help. The pool guy has no idea. HELP?????