How to remove stains from fiberglass pool

There is a dichotomy of pleasure and pain in owning a swimming pool. Hardly a joy could compare to the joy of taking a dip in the refreshing waters of a backyard pool on a hot summer day. But there aren’t many tasks that are as annoying, time-consuming, and downright frustrating as cleaning the pool. So, unless you want to wade into putrid green algae-infested water this summer, regular pool maintenance is in order. But you can spend less time cleaning stains from your fiberglass pool and more time relaxing in it with these simple tips from the pool cleaning pros.

Stain identification

The first challenge is to identify the type of stain. Not all stains are created equal, and each stain must be treated uniquely. Once you can clarify the cause of the stain, you can implement the following stain removal tips.

Stains on the water line

Fiberglass pools are less prone to staining than other types of pools, but it is not uncommon to find stains on the waterline. These stains that appear on the water line are usually a collection of body oils, lotions, and sunscreens. To break down oil stains, use a non-toxic enzyme-based cleaning solution. There are many different products on the market that prevent waterline staining. Choose a natural product that allows for reduced use of chlorine. Many pool owners also use a Mr. Clean magic eraser to simply rub and wipe away the foam stain, but this will not prevent the stain from coming back.

Algae

Usually due to unbalanced chemicals and irregular pool cleaning, algae or bacterial slime will be a slippery discoloration that builds up on the walls. Algae are single-celled, plant-like microorganisms that grow in pool water if the pH level is below 7. Some of the most common forms of algae are black spot, mustard green algae, and green algae. Algae is one of the most common pool problems, luckily it’s also one of the easiest to correct. Test your water to make sure its pH and chlorine are at recommended levels. Copper algaecide treatments are available at pool stores to kill black algae. If your pool is affected by green algae, a strong dose of hypochlorite should be added to the pool until the water is cloudy gray. If algae grows in your pool, you should take this as a serious reminder that you are not cleaning your pool enough.

Oxide

The same recipe for a common cold is also the best solution for rust stains in a pool. Vitamin C (ascorbic acid) will dissolve oxidation stains. Simply rub a vitamin C tablet on the stain and use a soft-bristled brush to agitate the area until it disappears. Use a metal reducer to prevent further rust stains from reappearing.

Prevention

The easiest way to keep your pool clean is regular maintenance. Spending 10 minutes cleaning your pool each week will save you time, effort and money in the long run. By testing your water regularly and making sure its chemicals are balanced, you’ll be able to spend less time cleaning it and more time swimming in it.