Hi,

I have a 24 foot in ground pool. I am having trouble keeping both my chlorine stable. I have put multiple rounds of stabilzer in the water - yet the cyanuric acid levels barely go up. Then the levels rapidly go down.

The pool is clear and free of any visable algea. My issue is that I am using much more chlorine than usual and it's beginning to cost me an arm and a leg.

The only thing that I can think where my pool is different from others, is that I have 15 foot high ceder hedges that hang over one side (maybe a 6 foot stretch at most). I am thinking that maybe when it rains that the oils from the ceder ferns are dripping "attaching" to the droplets of rain and going into my pool water which is messing up my pool water chemisty. Mind you, I have had the ceder hedges for years and have not really had any issues except at the beginning of the season.

Would appreciate any feedback.