AutoPot Hydrotray Module | Add-On Expansion Tray Australia

AutoPot Hydrotray Module | Add-On Expansion Tray for Self Watering Systems Australia

The AutoPot Hydrotray Module is an individual expansion tray for growing or extending an existing AutoPot self-watering system. Available in two formats — the Single 12 inch Module for one large pot and the Double 10 inch Module for two smaller pots — both use the AutoPot Smart-valve to deliver nutrient solution only when the growing medium dries out. No pump, timer, or electricity required. Multiple modules connect from a single reservoir for scalable gravity-fed growing at your own pace.

How AutoPot Smart Valve Irrigation Works

The Smart-valve at the base of each Hydrotray module opens when the tray is empty and closes when the solution reaches the correct level. Plants draw solution from the tray through the growing medium at their own pace. When the tray empties, the valve refills it automatically from the connected reservoir. There is no runoff, no overwatering, and no pump schedule to manage. The plant dictates irrigation timing based on its actual water demand.

This passive approach makes AutoPot systems particularly effective for Australian growers dealing with temperature fluctuations — plants draw more solution during hot periods and less during cooler ones without any intervention. For a complete starter setup including reservoir and connection hardware, see the AutoPot Hydropak Starter Kit.

Single vs Double Module — Which One to Choose

The Single 12 inch Module takes one pot and is designed for larger or deep-rooting plants such as tomatoes, cucumbers, and large cannabis plants. It gives individual control over spacing and is the preferred choice for training methods like SCROG or LST where plants need room to spread. Up to 4 single modules can be fed from one 35L reservoir.

The Double 10 inch Module holds two 10 inch pots from a single Smart-valve in the centre of the tray. It is more space-efficient and suited to medium-sized plants, herbs, and ornamentals. The double format works well inside greenhouses where tray stands can be configured for maximum space utilisation.

Frequently Asked Questions

Do I need a pump to run AutoPot modules? No. AutoPot is a gravity-fed system. The reservoir must be elevated above the module level to allow gravity flow through the Smart-valve. No pump, timer, or electricity is required for irrigation.

How many modules can I connect to one reservoir? AutoPot recommends feeding no more than 4 single modules from a 35L reservoir. For larger installations use a larger reservoir or split the system across multiple feed lines.

What pot sizes work with these modules? The Single 12 inch Module fits a 12 inch (30cm) pot. The Double 10 inch Module fits two 10 inch (25cm) pots. See the Origin Pots for compatible pot sizes.

Is this compatible with the AutoPot Hydropak Starter Kit? Yes. These modules connect directly to the same reservoir and feed lines used in the AutoPot Hydropak Starter Kit.

Product Details

• Brand: AutoPot
• Irrigation: Passive gravity-fed via Smart-valve
• Compatible with: AutoPot Hydropak Starter Kit, standard gravity-fed reservoirs
• Max modules per 35L reservoir: 4