We have had our pool since March and since May I have been struggling with the pool turning green (not swamp green, but not pretty clear water).
I tried using bleach for a week, but was having to add so much that I have gone back to chlorine tabs, which I know lead to higher levels of CYA. Would like to go back to something without the added stabilizer, but not sure what steps to take. I am new to the TFP method and would really appreciate some guidance.
Here is my info as well as I understand it.
In ground plaster pool with a spa. Sand filter.
17,000 gallons.
Numbers yesterday were:
FC: 5.0
CC: 1.0
TC: 6.0
CH 275
TA: 130
CYA:90
PH: 7.8
I added 22 oz muriatic acid per pool math instructions. 8 hrs prior to testing yesterday I added a bag of shock that we had on hand.
Today's numbers:
FC: 3
CC:1
TC 4
PH: 7.5
CH: 300
TA: 100
CYA: 100
I have small patches of green algae on the limestone steps and seat in the pool. No algae in the spa. The algae scrubs off easily with a wire brush.
Do I need to SLAM? If so can someone please lead me to the link for step-by-step instructions? Is this going to be an ongoing problem due to CYA levels? Also, why is CYA level so high after only 4 months of pool operation? Can the tablets cause that much build up in 4 months. I am hesitant to drain the pool at this point as we are in drought restrictions and I believe will incur a hefty surcharge if we refill. I would appreciate any suggestions, guidance, help! Thanks in advance!
I tried using bleach for a week, but was having to add so much that I have gone back to chlorine tabs, which I know lead to higher levels of CYA. Would like to go back to something without the added stabilizer, but not sure what steps to take. I am new to the TFP method and would really appreciate some guidance.
Here is my info as well as I understand it.
In ground plaster pool with a spa. Sand filter.
17,000 gallons.
Numbers yesterday were:
FC: 5.0
CC: 1.0
TC: 6.0
CH 275
TA: 130
CYA:90
PH: 7.8
I added 22 oz muriatic acid per pool math instructions. 8 hrs prior to testing yesterday I added a bag of shock that we had on hand.
Today's numbers:
FC: 3
CC:1
TC 4
PH: 7.5
CH: 300
TA: 100
CYA: 100
I have small patches of green algae on the limestone steps and seat in the pool. No algae in the spa. The algae scrubs off easily with a wire brush.
Do I need to SLAM? If so can someone please lead me to the link for step-by-step instructions? Is this going to be an ongoing problem due to CYA levels? Also, why is CYA level so high after only 4 months of pool operation? Can the tablets cause that much build up in 4 months. I am hesitant to drain the pool at this point as we are in drought restrictions and I believe will incur a hefty surcharge if we refill. I would appreciate any suggestions, guidance, help! Thanks in advance!