The Piscimar Linnet Action PM-121 is a biodegradable waterline cleaner and degreaser for swimming pools and spas, formulated to tackle the stubborn residues that build up at the water’s surface: body oils, sunscreen, self-tanner, and general grime that clings to pool walls. It also helps lift bluish copper stains and works across a wide range of pool finishes, including liner, polyester, mosaic tiles, and reinforced membrane.
What the Piscimar Linnet Action PM-121 is designed to solve
Every pool that gets regular use develops a tell-tale ring at the waterline. Sunscreen, body oils, and tanning products accumulate just where the water meets the wall, and ordinary cleaning rarely shifts them completely.
Left unchecked, that band darkens and hardens over time, making it progressively harder to remove without a dedicated product.
The Piscimar Linnet Action PM-121 was developed specifically for this problem – cutting through grease and product build-up to restore a clean, well-maintained appearance to the pool wall.
How to use the Piscimar Linnet Action
Apply the Piscimar Linnet Action PM-121 directly to the area you want to clean, using a sponge, cloth, or brush suited to your pool’s finish. No dilution is needed – use it straight from the bottle.
Before you start: if the waterline is partially submerged, lower the water level slightly to expose the full band of residue and make scrubbing easier.
Step-by-step cleaning guide
- Apply the product to a sponge, cloth, or appropriate brush.
- Scrub the waterline wherever you can see grease, sunscreen, tanning residue, or discolouration.
- Allow a brief contact time on areas where the build-up is heavier or more stubborn.
- Rinse the cleaned area thoroughly with water to remove loosened residue and any remaining product.
- Repeat if necessary on particularly persistent stains.
Important: Linnet Action is a surface cleaner for the waterline only. It is not a water treatment product and must not be added to the pool water.
When to clean your pool’s waterline
Clean the waterline as soon as you notice dark marks, greasy residue, or staining from sunscreen and tanning products – don’t wait until the build-up has hardened.
These marks are most common during the main swimming season, when the pool sees heavy use and bathers bring in more oils, creams, and external dirt. In the UK and northern Europe, that typically means May through September.
Regular cleaning with the Piscimar Linnet Action PM-121 prevents residue from bonding too deeply with the pool surface, keeping maintenance straightforward throughout the season.
Why choose the Piscimar Linnet Action for your waterline
The Piscimar Linnet Action PM-121 is the right choice when you want a product built for the job rather than a generic household cleaner that may not be safe for your pool’s finish.
It is particularly effective against grease, sunscreen, and tanning product stains, and can also help with light limescale deposits and the bluish metallic marks that copper sometimes leaves on pool surfaces.
- Formulated specifically for pool waterline cleaning.
- Removes body grease, oils, sunscreen, and tanning residue.
- Helps with light limescale deposits and copper-related staining.
- Simple application with a sponge, cloth, or brush.
- Ready to use – no dilution required.
Always read the label and product information before use.
Why buy Piscimar Linnet Action from Pools&More
At Pools&More, you’ll find the Piscimar Linnet Action PM-121 backed by a team of pool specialists with hands-on expertise in water treatment and surface maintenance.
As an official Piscimar distributor, Pools&More can help you choose the right product and use Linnet Action correctly – whether you have questions about waterline staining, grease build-up, or compatibility with your pool’s finish.
Expert support: not sure which product suits your waterline problem or whether Linnet Action is right for your pool surface? The Pools&More team is on hand before and after your purchase.
- Official Piscimar distributor.
- Specialist pool and maintenance retailer.
- Pre- and post-purchase advice included.
- Guidance on waterline stains, grease, and surface compatibility.
Frequently asked questions
What does the Piscimar Linnet Action PM-121 actually do?
It cleans the waterline of swimming pools and spas, removing the greasy ring left by body oils, sunscreen, and tanning products, as well as general surface grime that builds up at the water’s edge.
Can I add Linnet Action directly to the pool water?
No. Linnet Action is a surface cleaner, not a water treatment. Apply it to the pool wall with a sponge or brush, then rinse off – never pour it into the pool water.
Does it remove sunscreen and tanning product stains?
Yes. Linnet Action is specifically formulated to cut through the oily, UV-darkened residue left by sunscreens and tanning products that cling to the waterline after regular pool use.
Is it safe to use on liner and polyester pool surfaces?
Yes. Piscimar states that Linnet Action is suitable for liner, polyester, mosaic tiles, and reinforced membrane finishes. Use a sponge or brush appropriate for your specific surface to avoid scratching.
How do I apply the Piscimar Linnet Action PM-121?
Apply a small amount to a sponge, cloth, or brush, scrub the stained section of the waterline, then rinse with clean water. For stubborn build-up, allow a short contact time before scrubbing, and repeat if needed.
Do I need to dilute it before use?
No – use it undiluted, straight from the bottle. Apply a small amount directly to your sponge or brush and work it into the surface. Diluting it will reduce its effectiveness.
Will it remove bluish copper stains from pool surfaces?
Yes. Linnet Action can help lift the bluish metallic marks that copper sometimes deposits on pool walls and waterline surfaces, in addition to its primary role as a grease and oil remover.
How often should I clean my pool’s waterline?
Clean it as soon as visible marks appear – dark rings, greasy residue, or sunscreen staining. Regular cleaning during the swimming season stops build-up from hardening and bonding with the surface, making each clean quicker and easier.
| Weight | N/A |
|---|---|
| linnet | 0,75L, 5L |
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