Anyone have advice on getting rid of some really tough stains on the vertical face of a waterfall?
I know that "elbow grease" is the most effective...but check out the attached pic. That wall has already been treated with full-strength muriatic acid, and scrubbed with a steel brush.
I know that there are chems that will prevent this type of build-up, but in the meantime, any suggestions?
You need to be a member of Pool Genius Network to add comments!
If you are a member of the "pool industry" community, you have found your home.
This is a network of pool builders, service professionals, retailers, and pool sales reps,…
Swimming pools are often associated with luxury, relaxation, and endless summer fun. But there's more than just the allure of crystal-clear water that leads a…
The Journal of the Swimming Pool and Spa Industry is coming back! JSPSI, a peer-reviewed technical journal, began in 1995 as a subscription-supported print-based publication. It contained articles at a technical…
All pool plaster finishes should last 20 years or more. However, some last only 5 to 7 years, and some less than a year before the plaster surface deteriorates, discolors, and looks terrible.
Why the difference? Very often, plaster…
For 50 years, the pool industry has considered pool water within an LSI of -0.3 and +0.5 to be acceptable and balanced. But recently, and without providing any supporting science or research, the NPC is trying to convince the industry that any…
There are two important issues involved when trying to achieve quality colored pool plaster that will remain durable, attractive, and the proper shade for many years.
The first issue is to utilize superior workmanship practices to achieve…
Replies
clr will clean that
clr! I had forgotten about that stuff. I'll give it a try. Thank you!
I think you may have nailed it. There is, indeed, a resevoir directly behind the wall, and the salt "stalagtites" forming on the surface are similar to the examples shown on wikipedia. I have been averse to using any chemical that could affect water chemistry, but it appears that I will be contacting stone suppliers to discuss options. Thank you for your help!
Stu
It appears to be efflorescence. Essentially it's the salts trying to work out of the mortar.I would not advise straight acid as it will break down the integrity of any cement/mortar.
When the stone work was done initially, a waterproofing agent should been applied to the surface where the stone is, and I suspect there is a well/resevoir where the water eminates from behind. That too should have been treated.
An additive to the mortar should been added as well.
Most stone suppliers carry cleaners to aid in removing efflorescence. Just be aware of their affect on your water chemistry or the finish on the pool.
Here's the definition and a better scientific explanantion of this occurence. Good Luck!
http://en.wikpedia.org/wiki/Efflorescence.com