I'm fighting an algae outbreak. My pool had looked wonderful up until 1 week ago. The water was crystal clear with no visible signs of algae. Then we started getting unusually large amounts of rain and everything has rapidly gone down hill.
I've been throwing massive amounts of bleach into the pool (using the pool calculator) and testing it daily. I'm trying to get my FC to 20 and to hold it there until the algae starts to disappear but no luck yet. We're also brushing the pool twice daily to loosen the algae.
On Monday I tested the water with the following results:
I added chemicals Monday evening and retested on Tuesday and the numbers were:
I added more bleach on Tuesday evening. I didn't do anything yesterday due to heavy rain.
This morning I retested and the numbers are:
The numbers are jumping all over the place.
When I added all of the chemicals on Monday the pool walls got even greener even though the water remained clear. By this morning there is still considerable algae but the majority of it has disappeared.
I should add that since Monday we've had over 9 inches of rain so I'm constantly having to drain some of the excess water. What's more we are scheduled to get heavy rain for the next 5 days.
My main question is how to add the chemicals. Do I add all of them at once or should I space them out over a period of time i.e. hours or days? I've been adding them simultaneously since -based on my understanding - if the chemistry is off in one category it will affect how the well the other chemicals work. However, after adding everything at once the pool looks worse for the next 24-36 hours.
Right now I feel like my dog chasing his tail. Any suggestions are greatly appreciated.
With this much rain and the algae problem someone suggested dropping several chlorine tabs directly into my skimmer. Your thoughts?