Will a pool cleaning robot collect the algae?
It's a common question among pool owners: can a robot cleaner really eliminate the algae that forms on the bottom and sides of the pool? While leaves and debris are generally well managed, algae present a real challenge. Depending on the robot, its suction power, brushes, filters and navigation technology, results may vary. Fortunately, some high-end models such as the Beatbot AquaSense Pro or the AquaSense Ultra are specifically designed to deal with even stubborn algae. Here is everything you need to know to properly equip a saltwater pool.
Algae: a tenacious enemy for swimming pools
Before exploring solutions, it is essential to understand the problem. Algae are microscopic organisms that develop rapidly in stagnant or unbalanced water. They adhere to walls, the pool floor, and even the waterline, forming slippery or greenish mats. Some algae are very fine (green algae), others thicker or slimy (black or mustard algae), making them more difficult to remove mechanically. Basic robots or those without active brushes often struggle to remove algae from surfaces. They may vacuum up detached algae, but on their own they are not enough to combat an invasion. For truly effective action, you need a robot with powerful brushes, an excellent filtration system, and ideally smart navigation that leaves no area untouched.What a pool robot can – or can't – do about algae
A pool robot can be an excellent ally against algae if you choose the right model. Entry-level robots without motorised brushes or powerful suction have little effect on fixed deposits. In contrast, models such as the Dolphin Maytronics or the Zodiac TornaX, which feature active brushes and high suction power, can remove a significant portion of floating or loosely attached algae.Top-of-the-range robots like the Beatbot AquaSense Ultra go further. With their dual-level filtration (fine and ultra-fine), they capture both large debris and microscopic algae spores. Their active rotating brushes remove biofilms, and their smart navigation ensures uniform coverage of the entire pool surface. Although they may not completely eliminate heavy algae infestations, they effectively prevent reappearance.
Prevent algae with regular cleaning
The best strategy is to prevent algae proliferation by maintaining a regular cleaning schedule. A robot such as the AquaSense 2, programmed to run even in ECO mode, prevents the formation of biofilms. By keeping the pool clean daily, you considerably reduce the risk of algae growth.It is also advisable to monitor the water pH, chlorine or salt levels and to use the pool's main filtration system. In areas prone to debris, complementing your robot with a solar skimmer like the iSkim Ultra further helps remove nutrients that fuel algae growth. Together, these measures create a comprehensive defence against algae.
And if my robot doesn't remove all the algae?
Even the best robot may not clear water that has turned green overnight. In cases of heavy infestation, a shock treatment with chlorine or active oxygen is necessary before resuming mechanical cleaning. Once the water is clear, the robot will maintain its cleanliness.Published on 31/03/2025
