Identifying Stains on Your Plaster Pool Liner (and How to Treat Them)

Few things are as frustrating as making a several-thousand-dollar investment only to have it quickly ruined by factors outside of your control. Pool owners know the feeling of this sting acutely. There are a ton of good reasons to buy a pool, after all—and enjoyment of your home’s outdoor space with friends and family ranks highly at the top of most Delray Beach residents’ list. However, when you re-plaster the pool lining, and it becomes stained within a week or two, your splash pad can feel like, well, a burden.

Plaster is a great material to line a pool with. It’s a classic for a reason. It’s inexpensive, water-resistant, and relatively durable. But it’s also filled with millions of tiny pores that can hold onto pigment deposits effectively. So a stained pool is a reality that 90% of plaster-lined pool owners will face. All of us here at Palm Beach Pool Doctor, Inc. will go over how to identify common stains and what to do about them. We’ve thrown in a couple direct links to products on our website that we can deliver to you for easy stain identification and removal.

What Color is Your Pool Liner Stain?

Well, color is not actually a great indicator of what might be causing a stain in a pool. It’s more of a rule-of-thumb.
The only way to correctly identify what is causing a stain in your pool with 100% certainty is to either call a pool cleaning technician or to use a stain removal verification kit.

These kits are inexpensive. They’re not 100% necessary, but I do recommend them. These kits remove all the guesswork from pool stain treatment and cuts down on the number of products you’re likely to try.

We’ve got a great one over in the store. Stain Drop’s Stain Removal Verification Kit is the kit I carry. It contains three unique surface tests to pinpoint exactly what’s causing your stain.

Reddish-Brown, Maroon, or Dark Stains

Cause: Dark, reddish stains often signal metal rust in the pool. Either you’ve got metals contaminating the pool for rainwater or a coin or electronic device fell in. Doesn’t really matter, it stains either way!

Treatment: Any of Palm Beach Pool Doctor, Inc.’s pool stain removers that treat metals. I especially recommend Sea Klear’s Metal Klear product. It’s affordable, can be used in salt pools, and tackles a wide range of metals to keep them in solution—and off your plaster.

Red-Blue Stains

Cause: Berries falling from nearby trees are the most likely culprit.

Treatment: Natural Chemistry’s Purge. Perfect for quickly clearing out organic stains.

Greenish-Brown Stains

Cause: Possibly precipitated copper ions, but more likely to be organic waste from falling leaves or bugs.

Treatment: Clear the pool of solid organic matter with a pool skimmer. Then shock it with a pool shock product to prevent algae overgrowth. Palm Beach Pool Doctor, Inc. carries Shockwave, a really affordable treatment, here on our online site.

Free Local Delivery, Expertise You Can Trust

We hope you’ve enjoyed our brief blog entry on pool stains. If you want to know more, give us a call. Alternatively, click on any of the links above to be redirected to Palm Beach Pool Doctor, Inc.’s online store. We offer free local delivery in the Delray Beach, Boca Raton, and Bonton Beach areas, and advice you can trust to back it up!

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