Hi,
I've got a 13,000 gallon inground pool on a permasalt system. I've added 80 lbs of salt and have had pool open now for 2 weeks. I know I'm dealing with TC, FC, pH, TA, Total Hardness, CYA, and Copper (Cu). My TA was 40 ppm for the first week and half and everything I read said to get TA at a good level....good level is a sliding scale as I see ranges all over the place and test strips categorize what is ok and ideal differently. But I knew at least that 40 ppm was low, so I added baking soda - 9.5 lbs of it over 2 days. TA and pH went up to 150+ ppm and pH 8.4, then both went down to 80-120 ppm and 7.8.
Here were my numbers at last test:
TA - 80-120. ppm
pH 7.8
TC - close to 0.
FC - close to 0.
Total Hardness - 250 ppm
CYA - 0
I then shocked pool with 9.1 ounces shock (Swim Best Super-CAL Shock, 73% Calcium Hypochlorite) and added 25 oz. of muriatic acid (HDX Muriatic Acid, 31.45% Hydrogen Chloride) to pool about an hour apart, and will wait to test again tomorrow morning. I know I need to get TA and pH in range in order to use CYA, and that CYA will raise TA. I have no CYA in my pool and all the FC from shock will burn off with these hot NC sunny days. Hoping that muriatic acid addition can lower TA and pH enough to where I can shock enough to get FC into acceptable range and then get CYA to 30 ppm. And FC levels close to 0 is not good or safe. Total Hardness and Copper have remained steady at 250 ppm and 0.5 ppm since opening pool.
Anyone see downfalls with this approach or have a better suggestion. I am new to balancing pool water and seems little more complicated than I knew before going into this.
Thanks!
I've got a 13,000 gallon inground pool on a permasalt system. I've added 80 lbs of salt and have had pool open now for 2 weeks. I know I'm dealing with TC, FC, pH, TA, Total Hardness, CYA, and Copper (Cu). My TA was 40 ppm for the first week and half and everything I read said to get TA at a good level....good level is a sliding scale as I see ranges all over the place and test strips categorize what is ok and ideal differently. But I knew at least that 40 ppm was low, so I added baking soda - 9.5 lbs of it over 2 days. TA and pH went up to 150+ ppm and pH 8.4, then both went down to 80-120 ppm and 7.8.
Here were my numbers at last test:
TA - 80-120. ppm
pH 7.8
TC - close to 0.
FC - close to 0.
Total Hardness - 250 ppm
CYA - 0
I then shocked pool with 9.1 ounces shock (Swim Best Super-CAL Shock, 73% Calcium Hypochlorite) and added 25 oz. of muriatic acid (HDX Muriatic Acid, 31.45% Hydrogen Chloride) to pool about an hour apart, and will wait to test again tomorrow morning. I know I need to get TA and pH in range in order to use CYA, and that CYA will raise TA. I have no CYA in my pool and all the FC from shock will burn off with these hot NC sunny days. Hoping that muriatic acid addition can lower TA and pH enough to where I can shock enough to get FC into acceptable range and then get CYA to 30 ppm. And FC levels close to 0 is not good or safe. Total Hardness and Copper have remained steady at 250 ppm and 0.5 ppm since opening pool.
Anyone see downfalls with this approach or have a better suggestion. I am new to balancing pool water and seems little more complicated than I knew before going into this.
Thanks!