Just wanted to post some conclusions.
Never was able to lower the chlorine consumption this season.
Pool stayed cristal clear only if kept above 6 ppm, cya is 40 now
No chlorine loss overnight!
Loss per day is still 2ppm which is more than double compared with last year around this time.
I figure there is something else in the water that makes the cya ineffective.
Maybe antifreeze from last winter?
Any thoughts?
Also I am using Walmarts Ultra, which to me has a scent to it?

Thanks
Dan