UAW Underwater Acid Wash Set

The darned thing actually works!Back story -- we live in West Texas where the dust blows. I had a pool cleaning robot but that "died" this winter, complicating things was fracturing my right shoulder during a ski trip (I like to say I swerved to avoid a pregnant nun but the TRUE story is much less "heroic" -- I slipped in the condo). Consequently the pool didn't get cleaned until spring. By then there was "dirt" which couldn't be removed. An internet search convinced me that it was "dirt scale" -- dirt covered by a calcium deposit.The pool looked horrible despite the water being fine. I put in some scale remover but the bottle said that might take weeks or even months to work. Well, the family gets together from around Texas for Independence Day so I decided to give this thing a try.At first I couldn't get the siphon effect working. I emailed the company and had a reply -- within TWO HOURS -- from a Vice President giving me some hints.One thing, which I thought of on my own, was to "inject" water into the tubing using an old turkey injector syringe that I had. That worked like a charm!So far I have done a quarter of the pool each day for two days (hey, its gotten in the high 90's the last few days and I am 70 so I quit in the early afternoon). Both my 11 year old grandson and my (unnamed year old) wife said the pool looks noticeably better. Not as good as it used to but much better. I used a gallon of acid each time. Yesterday the pool pH dropped to 6.4 (although the company says that one may not even notice a change). I put in some pH increaser and withing two hours the pH was back up to 7.4. I'll be working on the rest of the pool over the next few days but I am quite pleased in how this has worked. Even if not looking perfect the pool looks better and I can wait and see what the scale remover does. At worst I can go back later and redo some of the heaviest spots.

This works quite well to deliver the acid directly over the stain. Syphon starts very quickly and flows well. Instructions are clear but could have used a bit more explanation of what bubbles to look for to start. Took about 30 to 40 seconds per stain instead of the 10 seconds the instructions mentioned. Went through a gallon of acid in about an hour. So was able to eliminate over a hundred spots in that time. Tedious. But easy. Product well made.

I bought this set thinking that I really could do an underwater acid wash. While it does remove any stain in the paster with acid, the process is painfuly slow. This set is better used for removing small to medium size stains. This set is not worth more than $20. The materials are cheap and look as if I could have made this myself in my garage. The attachment that is supposed to draw acid out of the bottle does not work. I guess you are supposed to use natual air pressure. I had to buy a pump bottle and attach that to this set to make it work properly. You are better off draining your pool and doing and acid wash the old fashoned way. I will keep my set in case I get any more small stains.

horrible waste of money it DOES NOT WORK! IT WONT PRIME.. I THINK TUBE TOO LONG TO PICK UP PRIME.. DONT BUY AND THE GUY IN CUSTOMER SERVICE AT PURITY POOL IS THE SON AND HE HAS AN ATTITUDE.. WONT HELP.

These work well. They wear out quite quickly, but do a great job.

new product to try

I have used these before and they worked great. This one after using it once the large head it stopped distributing the acid to the whole head instead only cleaned 2 small strips.

It did the job that was rquired of it