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One thing I forgot to mention in my previous post with using Sea Klear for metals and tannins is that it will not lift the existing stains off the plaster. Neither will the Blue or Purple Stuff from Jack's. Being that this brown water developed over the winter, it is likely to have stained the pool shell, as well as turned the water brown.
If this is the case, then you will probaly have to do a clean up in stages that involve a metal/stain lifter, such as Vanson's Metal Klear. I'm not sure on the procedure, as my experience with brown water was on annual new fills from pools that drain after every season, and the shell was already cleaned. You may have to clear up the water first with the Sea Klear procedure, then lift the stains with a product like Metal Klear, followed by another dose of Sea Klear, or perhaps the Culator product mentioned in another discussion to remove the lifted metals or tannins. I don't know if the Metal Klear or other similiar products are strong enough to do anything when the water is already brown. There may be too much interference to short circuit the results.
This all can get expensive. sometimes draining and mild acid washing is the best option.
I'm a little confused with Luke's recommendation of using a "metal" sequestering agent, (Blue Stuff or Purple Stuff), with a phosphate remover and basic clarifier for removing what is essentially tannin from the leaves. By sequestering, am I correct in assuming that it is just temporarily grabbing on to the metals, and not really removing them? So if Jack's works on tannins, which isn't a metal, then it also would be a temporary cure at best unitil the chlorine broke the bond. I can see the benefit of a clarifier if the right one is chosen, although I don't understand the reasoning behind the phosphate remover.
The one product I know that works fairly well on tannins, and metals, is Sea Klear. This is their clarifier product, (chitosan), at a dose of 1 gal per 20,000 gal per ppm of metal. It's too bad there are not that many people that know about the power of chitosan. It works as a chelator for metals and tannins. Put it in, let circulate for a while, and then shock pool to 10 ppm's. I've been using this for metal removal on start ups for the past 15 years, and has never failed me yet. A picture is worth a thousand words, so this picture is of a 150,000 gal outdoor munincipal pool with manganese from the city fill water, and taken about 1/2 hour after shocking. The water came in dark green before shocking. Pool was blue the next morning. Backwash water was dark brown, as everything was in the filter.
You can pre-test it if you want. If your water is still brown, take a sample in a clear jar. Put in 20 or 30 drops of Sea Klear and shake. Put in a very small amount of bleach (2 or 3 drops). Let stand for a while and you should see flocc's of the tannins gather together.
You can also do this on red water from a spigot that wasn't used for some time, or from someones well.
Merrill fill Water.jpg
Luke Norris said: