- Jan 25, 2019
- 66
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite Pro (T-15)
I could not find my answer, so a new thread.
Iron staining verified per the vitamin C tablet test. Over the years, when adding muriatic acid, I used a PVC pipe to concentrate the acid on the pebble surface. This would result in bright clean spots. Over time, this has created quite an ugly look.
Per TFP reading, I am in the middle of the ascorbic acid method. I used 2lbs all at once. The SWG is turned off. Pool temp is 72 degrees F. I've added Suncoast Algaecide (always have being a recent PAP devotee). My metal control has been Suncoast Ultra Mineral Control. (I am changing over to the SC-1000 after I finish the bottle.)
Before readings:
PH 7.2
FC 0, CC 0
CH 450
TA 110
CYA 50
Shortly after adding ascorbic acid I tested PH and Chlorine
PH 6.8, FC 0
14 hours later the staining is dramatically reduced. Thoroughly brushed. There was also 1/2 of rain, acidity unknown.
PH 7.2
FC 0, CC 0
CH 400
TA 70
CYA 50
My dilemma: Why did the PH increase? I am tempted to add more ascorbic acid but it will take me 2 days to get it. Can I keep the pool at those readings without damaging the pool surface or hardware? I would have thought 2lbs with my size pool would have been enough. I took care not to overdose because I read that could make it difficult to rebalance.
Iron staining verified per the vitamin C tablet test. Over the years, when adding muriatic acid, I used a PVC pipe to concentrate the acid on the pebble surface. This would result in bright clean spots. Over time, this has created quite an ugly look.
Per TFP reading, I am in the middle of the ascorbic acid method. I used 2lbs all at once. The SWG is turned off. Pool temp is 72 degrees F. I've added Suncoast Algaecide (always have being a recent PAP devotee). My metal control has been Suncoast Ultra Mineral Control. (I am changing over to the SC-1000 after I finish the bottle.)
Before readings:
PH 7.2
FC 0, CC 0
CH 450
TA 110
CYA 50
Shortly after adding ascorbic acid I tested PH and Chlorine
PH 6.8, FC 0
14 hours later the staining is dramatically reduced. Thoroughly brushed. There was also 1/2 of rain, acidity unknown.
PH 7.2
FC 0, CC 0
CH 400
TA 70
CYA 50
My dilemma: Why did the PH increase? I am tempted to add more ascorbic acid but it will take me 2 days to get it. Can I keep the pool at those readings without damaging the pool surface or hardware? I would have thought 2lbs with my size pool would have been enough. I took care not to overdose because I read that could make it difficult to rebalance.