Green Water - Algae?

[Watermom]

How have you been keeping the chlorine high with only trichlor tabs?

[donovan.lambright]

About a month.

[PoolDoc]

+ Dose your pool in the evening with bleach to take levels 15 ppm or higher -- 1/2 - 3/4 gallon of bleach should do it.

+ Brush your pool thoroughly the following AM.

+ Continue to dose with bleach in the PM to 15+ ppm, for 3 days after there's no green anywhere. (A gallon of 8.25% bleach will add ~20 ppm to your pool.)

[Watermom]

I think you misread my question. I wasn't asking you how long you have been using trichlor to keep chlorine level elevated but how you were doing it. You cannot shock a pool with trichlor tabs. My recommendation was going to be the same as Ben's above. Use bleach to shock the pool.

[donovan.lambright]

You're right, I misread the question. I shocked the pool with liquid bleach last night. This morning, the FC was 16 ppm. The water is still greenish and there is a yellowish layer of something on the bottom.

[PoolDoc]

Keep it high, and BRUSH it!

[donovan.lambright]

Will do.

If this is algae, I'm puzzled as to what happened. I opened the pool using liquid bleach and only switched to trichlor after the FC levels were established. I checked it at least once per day and it never got below 4 ppm. Mostly, it was in the 6 to 10 range. What am I missing?