Hi. I’ve been reading with great interest many posts on this forum as its absolutely the best I’ve found! We are in SW France, so the only problem I have is the unit conversions and substitutes for products available here!
We inherited a 144000l pool (12m x 6m overall size - 1.2m at shallow end and 3m at deep end). It runs with a sand filter and we sanitise with chlorine tablets in the skimmer. Heated to 30degrees by a heat pump.
For the last couple of years we have been learning how to balance the water, and were getting pretty good - but this year…not so good!
We noticed that the water, although clear, seemed to have a green tint. After some research I tested the yellowish brown stains on the pool walls (below water line) and found the vitamin c tablet cleared it immediately…so metal staining right?!
I bought myself some metal stain remover which fairly successfully lifted the staining off the walls…I then added a sequestrant to hold the metals in the water. The products used suggested lowering the chlorine level before use, and then raising it slowly after treatment to reduce the chance of the sequestered metals re-staining.
Fairly straightforward…or so I thought!
However, I noticed that my TA reading was off the chart so also added Hydrochloric acid (muriatic!!) to lower this. BTW I wait a good 4 to 24 hours in between various chemical additions.
My problem now is that the pool has become a milky, albeit blue, soup! For 2 weeks now!
I went to the pool store with a water sample…they sold me an anti-phosphate after trying to sell me another sequestrant (decided the pool store isnt going to be of much use to me!!) Added this…no change.
I have tried adding a few cups of DE to my sand filter(which runs 24/7 and is babysat in terms of backwashing)…no change.
I am adding tub loads of chlorine shock tablets to the water, which seem only to raise the FC level short term before it disappears to 0 again (it doesn’t hold overnight and I notice a chlorine smell which, combined with a higher TC means CC right? So I keep adding more!)
I feel as though I am dumping chemicals in left right and center…but nothing is making any difference. Am I cancelling myself out, or using incompatible chemicals?
The average pool readings throughout the last couple of days(I’ve started to log every couple of hours in desperation!) have been:
TH: 100
TC: 5
FC:3
PH: 6.6
TA: 140
CYA: 0
We have a gite here and so paying guests…I NEED to get a hold on this cloudy water problem FAST!!
Pleeeease help!!!
(Photos of just after adding ascorbic acid to treat metal stains…and our current blue soup!)
We inherited a 144000l pool (12m x 6m overall size - 1.2m at shallow end and 3m at deep end). It runs with a sand filter and we sanitise with chlorine tablets in the skimmer. Heated to 30degrees by a heat pump.
For the last couple of years we have been learning how to balance the water, and were getting pretty good - but this year…not so good!
We noticed that the water, although clear, seemed to have a green tint. After some research I tested the yellowish brown stains on the pool walls (below water line) and found the vitamin c tablet cleared it immediately…so metal staining right?!
I bought myself some metal stain remover which fairly successfully lifted the staining off the walls…I then added a sequestrant to hold the metals in the water. The products used suggested lowering the chlorine level before use, and then raising it slowly after treatment to reduce the chance of the sequestered metals re-staining.
Fairly straightforward…or so I thought!
However, I noticed that my TA reading was off the chart so also added Hydrochloric acid (muriatic!!) to lower this. BTW I wait a good 4 to 24 hours in between various chemical additions.
My problem now is that the pool has become a milky, albeit blue, soup! For 2 weeks now!
I went to the pool store with a water sample…they sold me an anti-phosphate after trying to sell me another sequestrant (decided the pool store isnt going to be of much use to me!!) Added this…no change.
I have tried adding a few cups of DE to my sand filter(which runs 24/7 and is babysat in terms of backwashing)…no change.
I am adding tub loads of chlorine shock tablets to the water, which seem only to raise the FC level short term before it disappears to 0 again (it doesn’t hold overnight and I notice a chlorine smell which, combined with a higher TC means CC right? So I keep adding more!)
I feel as though I am dumping chemicals in left right and center…but nothing is making any difference. Am I cancelling myself out, or using incompatible chemicals?
The average pool readings throughout the last couple of days(I’ve started to log every couple of hours in desperation!) have been:
TH: 100
TC: 5
FC:3
PH: 6.6
TA: 140
CYA: 0
We have a gite here and so paying guests…I NEED to get a hold on this cloudy water problem FAST!!
Pleeeease help!!!
(Photos of just after adding ascorbic acid to treat metal stains…and our current blue soup!)