PhytoMat

Installation Guide

PhytoMats are modular sub-irrigation mats that create a reservoir beneath the planting surface and help distribute water evenly across the root zone. Each 12″ × 12″ tile connects into a continuous grid to form a unified planting base, available in two configurations: structural tiles for load-bearing applications and trim-to-fit tiles that adapt to irregular layouts and custom geometries.

A structural PhytoMat tile shown within a continuous grid: a 12-inch square of nine cup positions in a triangular truss lattice, the surrounding tiles faded to show how modules connect into one planting base

One tile within the continuous PhytoMat grid — 12″ × 12″

Modular 12″ × 12″ format.

Available in Structural (load-bearing) and Trim-to-fit configurations.

Trim-to-fit tiles support in-field modification with a utility knife, shears, or electric saw.

Supports automated irrigation or manual fill systems.

Improves water distribution and reduces dry pockets.

Specifications

Mat size12″ × 12″ (305 × 305 mm) base · 12⅜″ × 12⅜″ (315 × 315 mm) incl. connectors
Thickness1.25″ (31 mm) assembled
WateringCapillary passive dispersion
Max load405 lb Structural · 200 lb Trim-to-fit (per sq ft)
Soil depth4″ to 18″ (101–457 mm) recommended

What's Included

Isometric line drawing of a PhytoMat plate module: a square truss-lattice plate with nine circular cup openings

Plate Modules

Separate the soil layer from the water reservoir below. Place a wicking medium (LECA or Vulkaponic) on top to draw water upward through capillary action.

Line drawing of PhytoMat cups: conical cups that hold the wicking medium

Cups

Hold the wicking medium and facilitate passive water distribution, supporting consistent capillary transfer from the reservoir to the soil layer.

Line drawing of PhytoMat feet: small clips that support each plate from underneath

Feet

Provide structural support for the modules. Attach evenly to the underside of each plate to ensure stable, level placement.

Structural Mats

Black in color. Full 12″ × 12″ squares that bear structural load up to 405 lb per square foot. Each structural mat is fully assembled using 12 feet and 9 cups.

Trim-to-Fit Mats

Green in color. Cuttable to fit custom geometries, bearing loads up to 200 lb per square foot. Trim-to-fit mats should be cut to shape first, then assembled.

Install the Mats

1. Install Structural Mats First

Begin with all Structural mats.

Assemble each mat using 9 cups and 12 feet. Use the provided foot-installation tools, or snap feet in by hand while wearing heavy gloves.

Start from the bottom-left corner and work upward row by row, following the grid layout in the drawing.

2. Install Trim-to-Fit Mats

Install after all Structural mats are placed.

Cut mats to fit as needed using shears, a box cutter, or an electric saw (recommended for large quantities).

If a full hole is cut through, install the included Cap to close the opening. Caps ship only with Trim-to-Fit sets and can be cut to any shape.

Install remaining feet and cups as required per layout, using the included tool or heavy gloves.

Work one mat type at a time. Every Structural mat must be placed and locked before any Trim-to-Fit cutting begins; trimming against an incomplete grid makes edges difficult to align.

Additional Components

Float Indicators

Install float indicators where water-level visibility is desired. For larger installations, place two or more at opposite points.

01

Remove a cup.

02

Place the bottom part, the Tube Foot, through the bottom of the mat, the same way the cup was attached.

03

Add the float with the inserted red indicator straw inside the connected Tube Foot.

04

Attach the tube to the top of the Indicator Foot.

05

Thread the red straw through the Indicator Cap hole.

Irrigation Inlet Tube

Each planter receives one irrigation inlet tube, placed close to the sump pump inside one of the tanks.

01

Place the Tube Foot through the bottom of the mat, the same way the cup was attached.

02

Add the tube to the top of the Tube Foot protruding through the mat.

03

Tie your water line from the tank into the tube.

Finish the System

1. Pre-fill System Check

Confirm all mats are installed and locked in place.

Verify all feet, cups, float indicators, and inlet tubes are correctly installed.

Ensure all plumbing and system connections are complete.

Test the system operation before proceeding.

2. Wicking Substrate Layer

Cover all PhytoMats with Vulkaponic.

Ensure even coverage across the entire surface.

This wicking medium is required for proper system function.

3. Plant Installation

Once Vulkaponic is installed, begin planting.

Place plants according to the planting layout, if provided.

4. System Start-up

After planting is complete, run the system.

Verify irrigation flow and overall system operation.

Confirm all zones are functioning as intended.

Connect to the Water Source

With the mats laid and the inlet tubes in place, connect the reservoir to a water source. Depending on the installation, this is a pumped supply from a holding tank or a manual fill.

1. Place a Sump Pump in the Supply Tank

Set one sump pump into the holding tank feeding this planting area.

Verify the tank is clean and free of debris before powering the pump.

2. Run the Supply Line to the Irrigation Inlet Tube

Tie the pump discharge line into the irrigation inlet tube installed in the mat.

Push each connection fully into its push-to-connect fitting until seated. Incomplete connections may cause leaks.

Confirm all discharge connections are secure.

3. Wire the Pump and Water Sensor to the XYLA Relay

Plug the sump pump power cord into the leftmost output on the XYLA Relay.

Connect the water sensor 3-pin connector to the XYLA Relay.

Turn on power to the XYLA Relay only after the 3-pin connector has been connected.

4. Fill the Supply and Check for Leaks

Fill the tank and monitor all fittings and lines closely for leaks.

Run the pump briefly and confirm water reaches the reservoir beneath the mats.

Where ball valves are installed between connections, verify every handle is in the OPEN position. A single closed valve will isolate the reservoir and starve the connected planting zone.

App Setup

With the hardware installed and tested, configure irrigation flow rate and scheduling in the Biotic OS app.

1. Enter Flow Rate

In the app, go to Device › Settings › Irrigation › Edit.

For the Little Giant 1/6 HP sump pump, enter 73,815 ml/min.

2. Set Up the Timer

Go to Device › Irrigation › + to add a schedule.

On shallow-tank installations, allow time between irrigation timers so water can distribute evenly between tanks.

Each schedule has a maximum timer of 20 minutes. The pump is rated about 19.5 gallons per minute at 3 feet.