Recent content by bbalthazor2

Update: 40 more gallons added last night after FC dropped below 5. Shortly after addition measured at 18FC and 61CC. And then this morning- Neat test: 5 FC, 84CC Retest with 10X water dilution: 0.5 FC, 7 CC (so 5 FC and 70 CC, after correcting for dilution) And then mid day- Neat test: 5.5 FC...

Thanks JJ, yes chlorine is all fresh off new pallets, some from pool store, rest from Menards. Regents are from brand new kit, don't expire until next year or 2026. Also, I had my mom get a Taylor K-1515-A kit (also FAS-DPD) to confirm the results- no differences when tested from same pool...

Thanks for the idea, I didn't see test kit error as a possible issue based on the volumes and past results, trending, etc, but in any case see results below. Latest neat test- FC-17 (this was about 45 minutes ago) 1:10 dilution (1 mL pool water, 9 mL bottled water)- 2 drops = FC- 1.0 ppm (10...

Hi all, I've been leveraging knowledge from this website for the past few years with great results for my pool, but currently helping my parents work through an issue with their pool and a bit stumped. Here's the details/story: ~25,000 gallon above ground pool sand filter (new sand last month...