Bestcleanerproducts.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

How to Clean a Fiberglass Pool Without Scratching the Shell

by 
David Patel
  Jul 8, 2023 2:55 PM
Prime for Young Adults: check your eligibility on Amazon

Grab a soft nylon brush and leave any metal scrubbers in the shed. Fiberglass pools have a slick outer shell that scratches easily under rough tools. To lift dirt safely, use soft nylon bristles, gentle cleaners, and routine vacuuming while keeping the pool full of water. An empty fiberglass shell can buckle or crack from underground water pressure, so every bit of cleaning must happen with the pool filled.

The exact method depends on the mess on the walls. Green algae usually wipes away with light brushing, but an oily waterline ring needs a soft sponge with mild soap, and rusty metal stains call for a targeted citric acid treatment. Proper water balance also plays a huge role, since balanced water stops mineral scale from sticking to the slick surface. A few simple steps will help protect the finish while getting every mark off the walls.

1
Stardrops - The Pink Stuff - The Miracle All Purpose Cleaning Paste
Stardrops - The Pink Stuff - The Miracle All Purpose
View on Amazon
2
Uoark Hand-Held Sponge Swimming Pool Brush,Hand-Held Bath Scrubber,Heavy Duty Scrub Sponges,Sponge Brush,Tile Scrub Brush for Cleaning Pool Walls & Tile of Cleaning.
Uoark Hand-Held Sponge Swimming Pool Brush,Hand-Held Bath Scrubber,Heavy Duty Scrub
View on Amazon
3
BRING IT ON! CLEANER Hard Water Stain Remover - Soap Scum, Calcium, Lime Scale, Remover for Shower Door, Tile, Glass, Fiberglass, Bathroom, Sink, Stone, Door 32 Ounce
BRING IT ON! CLEANER Hard Water Stain Remover - Soap
View on Amazon
4
Swimming Pool Cleaner & Spa Stain Remover (2 lbs) - Natural Citric Acid Powder Pool Clarifier, Works on Vinyl Liners, Fiberglass, Metals – Removes Rust & Other Stains Without Harsh Pool Chemicals
Swimming Pool Cleaner & Spa Stain Remover (2 lbs) -
View on Amazon
5
Bosh Chemical Vanish Pool & Spa Stain Remover (2LBS)- Natural Safe Citrus Based, Works Excellent on Vinyl, Fiberglass, and Metals, Removes Rust and Other Tough Stains
Bosh Chemical Vanish Pool & Spa Stain Remover (2LBS)- Natural
View on Amazon
6
Quick N Brite Scum Off No Harsh Chemical Shower Cleaner for Fiberglass, Tile, Grout, Stone, Porcelain, Acrylic, Hard Water Spots, Calcium & Mineral Deposits, Soap Film, Mold & Mildew, 64 Fl.Oz
Quick N Brite Scum Off No Harsh Chemical Shower Cleaner
View on Amazon
7
Aquatix Pro Pool Step & Corner Vacuum Brush Best for Above Ground & Inground Swimming Pools, Spas & Hot Tubs, Fine Bristles, 1-1/2 Hose & 1-1/4 Pole Connection, Tackles Hard to Reach Places
Aquatix Pro Pool Step & Corner Vacuum Brush Best for
View on Amazon
8
Pool-Whiz Pumice Block, Pool Tile & Concrete Cleaner, Pumice Stone for Cleaning Pools, Spas & Water Features, Pool and Spa Cleaner, by Billy Buckskin Co. Pack of 1
Pool-Whiz Pumice Block, Pool Tile & Concrete Cleaner, Pumice Stone
View on Amazon

Last update on 2023-07-08 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Understanding the Basics of a Fiberglass Pool

Getting to know the structure and nature of your fiberglass pool is the first step in effective maintenance. Fiberglass pools, as their name suggests, are made from fiberglass—a strong, lightweight material that's resistant to many common forms of damage. But just because these pools are durable doesn't mean they don't need a bit of love and care.

Fiberglass pools are incredibly appealing because they offer easy installation, low maintenance, and a smooth finish that prevents algae and bacteria from hiding away. However, they can still fall victim to unsightly stains, discoloration, and mineral deposits if not cared for correctly. Knowing how to clean a fiberglass pool is vital to keeping your pool inviting and prolonging its life.

It's also worth noting that the maintenance for fiberglass pools differs slightly from concrete or vinyl pools. The cleaning agents that can be used, the type of pool brush suitable, and the care to prevent scratching the smooth finish are all unique considerations for fiberglass pools.

Lastly, the key to keeping your fiberglass pool in top-notch condition is consistency. Regular maintenance and cleaning can save you from larger, more expensive repairs down the line. Prevention, as they say, is better than cure.

Gathering the Necessary Supplies

To clean your fiberglass pool, you'll need some essential tools and cleaning agents. These may include a pool vacuum, a soft pool brush, pool skimmer, and appropriate cleaning chemicals. Let's dive into the specifics of each tool.

A pool vacuum is an essential tool for any pool owner. It helps in removing debris and dirt that settle at the bottom of the pool. A manual vacuum is typically sufficient for smaller pools or if you don't mind a bit of workout, but an automatic pool cleaner can be a worthy investment if you have a larger pool or prefer a hands-off approach. 

[

BRING IT ON! CLEANER Hard Water Stain Remover - Soap Scum, Calcium, Lime Scale, Remover for Shower Door, Tile, Glass, Fiberglass, Bathroom, Sink, Stone, Door 32 Ounce
View on Amazon
]

Next up is a soft pool brush. This tool is crucial when it comes to how to clean a fiberglass pool. A soft brush is necessary for fiberglass pools to prevent scratches or damages to the pool's surface. Brushes with nylon bristles are often recommended.

A pool skimmer is another must-have tool in your cleaning arsenal. It's a net attached to a long pole, used for removing leaves, bugs, and other floating debris from the pool surface.

Proper Use of Pool Cleaning Chemicals

Cleaning chemicals play a significant role in pool maintenance. They are essential for balancing the water, preventing algae growth, and removing stubborn stains.

Firstly, balancing your pool water is an essential aspect of pool maintenance. It involves adjusting the pH, alkalinity, and chlorine levels. Unbalanced water can not only be uncomfortable for swimmers but can also cause damage to your pool and equipment.

For stain removal and deep cleaning, specialty cleaners designed for fiberglass pools are your best bet. Remember to always follow the manufacturer's instructions when using these products to avoid causing harm to your pool's surface or the swimmers.

Algaecides are also beneficial, especially during the peak swimming season or if the pool is regularly exposed to high temperatures. These chemicals help prevent algae growth, which can lead to discoloration and other issues in your pool.

A Step-by-step Guide to Cleaning Your Fiberglass Pool

Now that we've covered the necessary tools and chemicals, let's dive into the steps on how to clean a fiberglass pool. The process might seem complicated initially, but once you get the hang of it, it'll become second nature.

Firstly, skim your pool to remove any floating debris. This task should ideally be done daily or as often as needed.

Next, brush the pool's surfaces. Make sure to cover every nook and cranny, as dirt and algae can hide in the most unexpected places. Remember to be gentle to avoid damaging the pool's finish.

After brushing, it's time to vacuum. As mentioned before, you can do this manually or use an automatic pool cleaner. Make sure to cover the entire pool floor and the corners where debris might accumulate.

Lastly, balance your pool water and add any necessary chemicals. Test the water regularly to ensure it remains balanced and safe for swimming. It's crucial to add chemicals in the recommended amounts to prevent over-chlorination or unbalanced pH levels, which can cause discomfort to swimmers and potentially damage your pool.

Explore further:

 

4
1 ratings
David Patel
WRITTEN BY
David Patel
David is a 38-year-old cleaning specialist and blogger from California. Previously a hotel housekeeper supervisor, he excels at evaluating all-purpose sprays and vacuum cleaners. His detailed comparisons highlight performance, scent, and ease of use, making his reviews a go-to for families seeking efficient, high-quality cleaners.