This is my second winter with an AGP. We have the Confer entry steps. All summer things have been great with algae prevention. Just like last year, my pool temp has dropped, chlorine consumption is getting less each week, but for some reason I have algae on the steps! My pump is running 8 hours per day and I'm loosing .5 to 1 ppm of FC per day right now, depending on cloud cover. I test every other day, but add FC daily and NEVER drop below 6 ppm (with the minimum being 5 ppm for my CYA level). I'm going to have to pull them in order to clean any algae underneath that I can't access from above the water. Any idea why this all of the sudden happens to me in the fall, when I can make it through brutal summers without a speck of algae?
For those who are curious my levels are as follows:
CYA- 70 (because I get 13.5 hours of sun per day in the summer and it's the level that works best for me in the summer)
pH-7.7 (will lower in the next few days)
CH- don't bother bc I have a AGP with a vinyl liner