I had put in an automated pump to pump bleach into the pool. Well, the "downside" to the convenience factor is that I totally forgot about refilling the tank. Weather had been cold so we hadn't been using the pool. We were thinking about using the pool this weekend. Pulled off the solar cover and I was greeted with a slimy film like yellowish substance that can be easily brushed off, only on the shady side of the pool. Sounds like the dreded mustard algae. And I only have myself to blame for letting my perfectly balanced water get out of control. Checked FC, it's zero.
It will be my first time fighting algae after I fired the pool guy / store, so I would like a little guidance.
Stats this evening:
pH = 7.8
FC = 0
CC = 0
TA = 60
CH = 180
CYA = 40
Pool size is 20k gallons. I was in a hurry so I called up leslies for their recommendation. They said take pH down to 7.5 and put in 4lbs of 73% cal hypo, which I did. After checking the forums tonight, I have a feeling that my 4lbs may have been lost.
So, tomorrow, if I have to start over and do it right, it sounds like I should
1) Take pH to 7.2
2) Should I take TA higher? To 80 - 100?
3) Take FC to 24 (based on my CYA of 40 and 20k pool)
4) Keep it at 24 until it drops less than 1 overnight.
5) In the mean time brush pool like crazy
Sounds about right?