The Square Matrix Pad is a cushion for the Matrix system, a way to evenly deliver water and nutrients to your plant. It is used with the PotPRO system and rockwool cubes, although you can use it with any other container.

The Matrix is placed directly on top of the medium and is a perfect complement to the Matrix Pad. This capillary pad is placed between the Matrix and the medium, so that it can absorb water and distribute it evenly.