Pool wall staining

A BBB guide to supermarket poolcare.
Use store-bought bleach, baking soda
and borax to replace proprietary pool chemicals.
swmasson
I'm new here
I'm new here
Posts: 3
Joined: Sun 11 Aug, 2019 17:10
My Pool: 17’ x 30’ rectangle (16k gallons), Jendy equipment, smooth pebble dash, chlorine
Location: Houston, Texas

Pool wall staining

Postby swmasson » Sun 11 Aug, 2019 17:18

Hi there,

Anyone got advice on how to clean the pool wall with white staining (just below the waterfall) - Not sure what the cause if this stain is, but will try and attach a photo to this post later - This is my first pool so not very experienced... any advice appreciated...

Thanks

https://share.icloud.com/photos/0jQu73oicVV8cTn2ndSng-PgQ#Home


Teapot
Pool Industry Leader
Pool Industry Leader
Posts: 1131
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Pool wall staining

Postby Teapot » Mon 12 Aug, 2019 11:00

Have you water test results and not from dip strips then we get a picture of your water and why this may be happening
swmasson
I'm new here
I'm new here
Posts: 3
Joined: Sun 11 Aug, 2019 17:10
My Pool: 17’ x 30’ rectangle (16k gallons), Jendy equipment, smooth pebble dash, chlorine
Location: Houston, Texas

Re: Pool wall staining

Postby swmasson » Tue 13 Aug, 2019 21:39

The staining was there when we bought the house, but I get my water tests done every week at the local pool store and everything is within range, however, ph is usually on the high side of the range coming in at 8...
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1351
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Pool wall staining

Postby Denniswiseman » Wed 14 Aug, 2019 06:05

swmasson wrote:The staining was there when we bought the house, but I get my water tests done every week at the local pool store and everything is within range, however, ph is usually on the high side of the range coming in at 8...

You say they are in range according to the pool store!
Let's have your numbers according to the pool store
FC:
TC:
pH:
TA:
CH:
CYA:
Your pH will continue to rise because of your waterfall, reducing your TA may help
Can you show an image of the staining without the water running
You can post images using the following
Click Full Editor & Preview
Click Attachments
Click Add Files or you can drag and drop
Teapot
Pool Industry Leader
Pool Industry Leader
Posts: 1131
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Pool wall staining

Postby Teapot » Wed 14 Aug, 2019 06:21

When the pH gets to 8 metals in the water drop out of suspension and stain.
swmasson
I'm new here
I'm new here
Posts: 3
Joined: Sun 11 Aug, 2019 17:10
My Pool: 17’ x 30’ rectangle (16k gallons), Jendy equipment, smooth pebble dash, chlorine
Location: Houston, Texas

Re: Pool wall staining

Postby swmasson » Wed 14 Aug, 2019 22:39

Denniswiseman wrote:
swmasson wrote:The staining was there when we bought the house, but I get my water tests done every week at the local pool store and everything is within range, however, ph is usually on the high side of the range coming in at 8...

You say they are in range according to the pool store!
Let's have your numbers according to the pool store
FC:
TC:
pH:
TA:
CH:
CYA:
Your pH will continue to rise because of your waterfall, reducing your TA may help
Can you show an image of the staining without the water running
You can post images using the following
Click Full Editor & Preview
Click Attachments
Click Add Files or you can drag and drop


Here is a copy of the latest results - Thanks again for your help!

Steve
Attachments
3A5C967C-58A9-4445-8338-71B9E1DE1F9D.png
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1351
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Pool wall staining

Postby Denniswiseman » Sat 17 Aug, 2019 03:26

Your CYA is a bit high try reducing it to 50 with a CYA of 70 you need a target of 8-10 chlorine
Have you tried muriatic acid on the staining
Your waterfall will increase pH by aerating the water and increasing the alkalinity, try reducing your TA to see if you get a more lower stable pH (maybe after you have tried muriatic on the stain)

Return to “BBB Pool Care”

Who is online at the Pool Help Forum

Users browsing this forum: CommonCrawl [Bot] and 0 guests