yes, it is brand newly filled. What is the cya????? I have 6 way and 4 way strips but the lady who has been helping me uses drops. She'll test again this thursday and we'll see what she has me add...???? I'll consult here before I buy/add anything. if you look on the thread on backfilling an AG pool....my pool photo is on there.
So when do I need to add algaecide??? Only if we see algae????