Closed the pool last fall with a CYA of 150 and TA of 180 (pool store test). Last week I began to drain and refill. I shocked with bleach before draining to kill anything still clinging to the walls. Drained to about 3 inches then began refilling. About ½ full I added 96 oz of bleach. Completely full and filter running I vacuumed up a layer of sand and brown residue that covered the bottom. TFT 100 test kit just arrived.
TA=40
FC=.5 (one drop turned clear)
CC=2 (4drops)
CYA=O
PH = 7.2
Tonight I added 32 oz of dichlor shock since I still have about 10 bags left from last years fiasco. Tomorrow I will pick up baking soda and bleach.
Can I continue to shock with the Dichlor since I need to raise the CYA level?
Also should I add recommended amount of baking soda to get the TA up to 80?
Then wait till the shocking process is done before retesting and adjusting PH?
Pool History
I have had 4 seasons with this pool. Opened and closed using pool store recommended chemicals. I started each season with 150 lbs sand in 200 lb filter. Chlorinated with trichlor pucks through automatic feeder running 8 to 12 hours a day depending on weather , use or looks of water. Target 1-3 ppm based on manufacturers recommend level. Always had evidence of algae on seam where wall meets bottom. It was usually controlled by brushing off 2 or 3 times per week. I have had at least 2 bad outbreaks of algae. At the end of last year it was hopeless so I just closed it. This will be my second time draining and refilling.[/b]
TA=40
FC=.5 (one drop turned clear)
CC=2 (4drops)
CYA=O
PH = 7.2
Tonight I added 32 oz of dichlor shock since I still have about 10 bags left from last years fiasco. Tomorrow I will pick up baking soda and bleach.
Can I continue to shock with the Dichlor since I need to raise the CYA level?
Also should I add recommended amount of baking soda to get the TA up to 80?
Then wait till the shocking process is done before retesting and adjusting PH?
Pool History
I have had 4 seasons with this pool. Opened and closed using pool store recommended chemicals. I started each season with 150 lbs sand in 200 lb filter. Chlorinated with trichlor pucks through automatic feeder running 8 to 12 hours a day depending on weather , use or looks of water. Target 1-3 ppm based on manufacturers recommend level. Always had evidence of algae on seam where wall meets bottom. It was usually controlled by brushing off 2 or 3 times per week. I have had at least 2 bad outbreaks of algae. At the end of last year it was hopeless so I just closed it. This will be my second time draining and refilling.[/b]