Good afternoon,

I saw your blog/posts and wanted to solicit your insight as the pool store that I purchased my chemicals from is stumped on what is going on in my pool. We have been fighting a green fog in the 40' x 16', 8' deep pool for three to four weeks.

Test results via aquacheck test strip this afternoon:

hardness = 250
tot chlorine = 3
free chlorine = 0-1
pH=7.2-7.8
alk=180
cyn=30-50

Currently, we chlorinate with a chlorine "frog" floating in the pool with 9 tablets in it. It has been full constantly since the following endeavor started:

I went to XXXXX's pools three weeks ago and asked them to give me whatever is needed to clean the green from my pool. They have tested the water at each step to make sure the balance was correct and had me make adjustments to alkalinity and pH to make sure I was in the envelope etc.. First, they gave me the green to clean product and I followed the directions for application and then 3 shock treatments. It did not work.

We started again and did the same thing, Green to Clean and shock. This time the green left and I had a cloud - however, I could not vacuum the day the green left as I had to fly out to a meeting. The next day I came back and it was green again. I replaced my cartrige as I wanted to rule that out as part of the problem.

We did another treatment of green to clean and shock and they told me to use their XXXXXXXX water clarifier after the shock. The green and fog did not leave.

Then they gave me "Clear and Perfect" clarifier (by natural chemistry) - that did not work. Then they gave me "Metal Free" as they thought it may be metals causing the problems.

The pool was still green and a fog was in the water. I have spent hours vacuuming and cleaning the cartridge...

Then they gave me Coral Seas' "Yellow Out" as it is supposedly stronger than the green to clean and told me to shock again and then use the Ultra bright. With this event, the green subsided a little and the clarity increased in the shallow end. However, there is a cloud from 3' down and the vacuum is not visible. I have running just the bottom drain and the cloud is still there. The water coming out from the filter appears to have suspended material in it - a cloud.

My guess is that I have a colloid issue with an overlapping residual algie issue.

I do not want to keep dumping the clarifier in as I suspect that is now contributing to the problem.

Please let me know what you can - and what to do to drop the polymer out.

Thank you,

Len

Gulf Breeze FL