During the off season, the ony real maintenence I've done is to run pump/filter 3 hours daily and dump chlorine in about every two weeks just to keep algae at bay.
Water temp has been 78f for about 3 weeks and I'm now working to dial everything into balance.
I've super-chlorinated....swept and vacuumed and have been using TF100 kit to check chemistry.
Everything seems to be fine except CYA is not getting a reading. I purchased an 8oz bottle of R-0013 reagent , midseason last summer. Could the reagent have gone bad in 6 months?