For reference, this thread was my last stain thread and it ended up being iron staining. I took a snorkel and a sock full of crushed vitamin C tablets and sorted it out, thanks for the contributions there team.
www.troublefreepool.com
I now have two new stains I am dealing with; pics attached. Note that the blue marks in the images is the original colour of the pool, they did a terrible job on the repaint many years before I bought the house.
First is a stain above the water line that runs around the whole rim of the pool, is about 5cm thick and a greenish tinge. It feels a little bit oily to the touch.
Second are many tiny brown spots that are on the small edge around the whole pool and on the inside corners of the steps. Some of the brown spots are also on the top fibreglass lip of the pool that is not exposed to the water (unless it is splashed out).
I have tried the following on both stains:
My numbers as of last weekend are:
Magnesium, staining and calcium
Been managing my pool succesfully since I inherited it 6 months ago. Fibreglass, 50,000L, SWG salt water with sand filter. Last weekend I did my monthly tests and got these results: Free chlorine: 1.5 Combined chlorine: 0 pH: 7.5 Total alkalinity: 60 Calcium hardness: 225 CYA: 100 Salt: 4700...
www.troublefreepool.com
I now have two new stains I am dealing with; pics attached. Note that the blue marks in the images is the original colour of the pool, they did a terrible job on the repaint many years before I bought the house.
First is a stain above the water line that runs around the whole rim of the pool, is about 5cm thick and a greenish tinge. It feels a little bit oily to the touch.
Second are many tiny brown spots that are on the small edge around the whole pool and on the inside corners of the steps. Some of the brown spots are also on the top fibreglass lip of the pool that is not exposed to the water (unless it is splashed out).
I have tried the following on both stains:
- Magic sponge (melamine foam)
- Erase-It Stain Remover wand (for fibreglass pools)
- A sponge made out of crushed walnut
- Vitamin C
- Polychite pool cleaner solution (fill pool to brim and add 500mL for 50,000L as per instructions and this was 1 week ago with no change)
My numbers as of last weekend are:
- FC - 5.2
- pH - 7.6
- TA - 81
- CH - 407
- CYA - 60
- Salt - 3900
- CSI - -0.17
- The pool shop I took my water to also said I have high copper. I usually test myself with a Clear Choice Labs kit but visited my local shop in desperation and they ran all the tests which were in line with my numbers but they were also able to do a copper test. They sold me the polychite pool cleaner.
