Spots on Plaster

d_red1

Well-known member
Jul 21, 2016
70
Keller, TX
Do these spots look like rust stains? This is day 3 of water and noticed these today. They don't seem to want to brush away. Gunite shell sat for 6 months and had standing water in the bottom several times with no signs of rust and now this pops up after I plaster. Plaster start up guy came today to do another acid bath and brushing and will be back tomorrow.
 

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onBalance

TFP Expert
LifeTime Supporter
In The Industry
Jul 25, 2011
1,076
Utah
Yes, they look like rust stains. Probably a very small piece of iron fell into the pool and made several rust stains
 

d_red1

Well-known member
Jul 21, 2016
70
Keller, TX
Okay, that puts me at ease. I initially was thinking rebar or tie wire was rusting through already and I was about to lose my mind. Now, as Z asked, how do we get rid of them?