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I still have about 1/2 of all my reagents in my TF-100 test kit, except for R-0009. I see on the TFTestKits.net site that a 1oz bottle is $5.23 (R-0009 Total Alkalinity Reagent (for TF-100)) where as I found regular sulfuric acid, 0.12N in a 60ml bottle for $5.12 on Amazon (Thomas SA9555-B...

Getting the temp from my AquaLink RS8 inside the house, but just confirmed with an instant read thermometer I use for cooking... 86.1. :p

FC=3.5 CC=0 pH=7.5 TA=130 CH=225 CYA=0 Salt=3200 Temp=86 So numbers were worse a few days ago, with pH at 8.4. I concentrated on pH 1st and got it down to 7.5, but that is as far down as it will go. Pool Math says to get pH to 7.0-7.2 to lower my TA to the goal of 70. What should I do? Today...

I just emptied, cleaned and refilled my pool. I do have a TF-100 kit, but don't know if I'm using the Pool Math app correctly. FC=1 CC=.5 pH = 8.2 (or higher) TA = 340 CH = 50 CYA = 0 Salt = 0 Water temp = 86 I'm waiting on my new salt cell to come in to add salt back into the mix. What...

Long story, but main pump went out. Took over a week to replace. Started recovering and salt cell went out. Salt cell has not been replaced, yet. Been in SLAM mode for 3 weeks. Testing twice a day and adding liquid chlorine (12.5%) as needed. I've been brushing once a day and have the...

I have a bucket of white granular pellets that I'm fairly certain is calcium chloride, but I've had it outside and the label on the bucket is no longer readable. How would I go about determining if what is in the bucket is calcium chloride?

Price/oz=price/oz $2.94/121=$0.02429752066 - - - Updated - - - Perfect! This needs to be a sticky! - - - Updated - - - Thank you...adjusted my spreadsheet!

I'm sure this is somewhere, but haven't found (or figured out) a formula for calculating value. For examples: Amount (oz.) % Chlorine Price Price/oz 121 8.25 $2.94 $0.0234 121 8.3 $3.13 $0.0259 128 10 $3.64 $0.0284 What am I missing to find true value? What would you buy?

Been lurking here quite a while and finally got a TF-100 kit for Father's Day. Pool looks and feels great, but using Pool Math page, seems to be off a bit. Readings: Size=18,000 FC=3 pH=8.2+ (used 8.6 in Pool Math) TA=370 CH=100 CYA=60 Salt=3100 Temp=86 Goals: FC=4 pH=7.5 TA=80 CH=400 CYA=75...