Streaks on new pool plaster-normal or not?

[Martypool]

Hi All,

Please take a look at this picture of my plaster. New pool has been in use for 4 months now. We noticed the marks about 1-2 months after pool's completion. The entire bottom of our pool has these streaky marks on it. Up close, these streaks appear to have tiny holes on them (like bubbles were popped on the surface). Mostly, the pool walls don't have these marks and look smooth and solid white, which makes us wonder why the bottom of the pool has these marks? If anyone knows what this is, and if it can be remedied, please advise.


Thanks!
Martypool

10,000 gal pool/attached spa, cartridge filter, in-ground, white plaster on gunite, 1.5hp/2hp pumps.

 

[jblizzle]

Welcome to TFP!!!

Can you post up a full set of test results? They made shed light on the issue.

 

[Martypool]

Thanks, will redo tests tonight when I get home. But, all tests were within 'normal' ranges yesterday when i took the pic.

 

[jblizzle]

What does "normal" mean? What test kit are you using?

With new plaster, curious what your TA, CH, and pH have been over the last 4 months.

 

[Martypool]

Here are my water test results:
FC-2
Ph-7.8
TA-120
TH-250
CYA-50

 

[jblizzle]

Not related to the plaster but your chlorine is way too low.

 

[onBalance]

Perhaps this thread is an example and will help. http://www.troublefreepool.com/threads/54515-White-Spotting-of-New-Plaster-Pools

 

[Martypool]

Yes, I found that thread and was thinking that could be our issue. My question now is, what do I do next. How long does a plaster job like this last compared to a perfect plaster? Should we try to get the builder to replaster?

 

[onBalance]

Technically, the plaster surface will last many years, but the porous spots will become worse and attract dirt and algae easier and will be more difficult to remove.
If it were my pool that I paid good money for, I would insist on a re-plaster.
Another option is to power-sand to remove the porous spots.