I am a new pool owner, pool was put in Aug 2012 end of month.
Fiberglass IG 14x32
cartridge filter ( cleaned every sunday)
I have not had any problems until this pass month. My CYN is over 100 and I am showing NO chlorine in pool. So that has caused me to have some areas of small spots of algae. (pool is crystal clear)
I went to pool store and they told me too drain about a ft of water then refill with fresh water. I did this yesterday. Still showing no chlorine... Oh I use 3" tablets in a floater.
I am so frustrated not knowing what else to do... also I want to know that while I am trying to lower this CYN should I still have the tablets floating in the pool??
It all started with having the yellow algae due to a lot of rain ( before all this chlorine was fine) So the pool store told me to get ph level adjusted, then put this yellow out in pool to kill algae, then shock the pool.. Then next morning my pool was bright green , so they told me to shock a second time. Well it cleared the algae but now I am battling this CYN level and no chlorine UGGGG.