Support answer · Using Your Robot

My Dolphin robot came with 2 sets of filters, which filter should I use?

From Maytronics support, updated 2025-11-26, rewritten for clarity. Parts that fix it are below.

The answer

What to know.

Basket Filters:

Basket Filters

Super Filtration: Multilayer ultra-fine filter with pre-filter (30 microns)

Cartridge Filters:

Fine Cartridge Filters

The Dolphin comes with fine (mesh) filters installed. The fine filters collect large debris (such as leaves, grass, and twigs). We recommend running the first cycle of the season with these filters.

Ultra-Fine Cartridge Filters

Depending on your robot model, there will also be pleated ultra-fine filters (corrugated paper). The ultra-fine filters collect small debris up to 50 microns (such as dirt, sand, and algae).

Some robot models have an additional spring filter that can be added to the ultra-fine filter basket for super filtration (30 microns). More and see if it is compatible with your robot model

Refer to the user manual to verify which filters come with your robot

We recommend switching to the ultra-fine filters after a cycle has been completed with the fine filters. If you start the first cycle with ultra-fine filters, they may clog more quickly, depending on how much debris is in the pool, and may need to be cleaned a few times during the cleaning cycle.

How to swap the filter panels

If you have different filters, look at the user manual for installation instructions.

Source: Maytronics support. Rewritten for clarity with the same steps; the videos and illustrations are Maytronics' own.

Replacement parts

Parts that fix this.

This answer comes down to filters. The exact part depends on the model: choose your robot and we open its parts list, or browse the category for every model.

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