GEOLITE Clay Pebble Grow Media, 45 L

High-Porosity Italian Clay for Demanding Grow Rooms

This 45 liter bag bag of GEOLITE clay pebbles is made from 100% natural Italian clay, fired at roughly 2200F and specially treated for a consistent, low EC and stable, neutral pH.

With about 85% total porosity, the pebbles deliver excellent root ventilation and oxygenation, and their large surface area helps foster beneficial bacterial growth around the root zone in drip feed, deep water culture, and flood and drain systems.

Key Features & Benefits

• Kiln-fired Italian clay — produces a strong, durable, and long-lasting medium
• Stable, low EC — keeps nutrient solution consistent batch after batch
• About 85% porosity — provides excellent root ventilation and oxygenation
• Sized 8-20mm, 45 liter bag — suits hydroponics, hydroculture, and aquaponic systems

Who Should Use This Medium

Commercial and home hydroponic growers who want a strong, durable clay medium with industrial-grade consistency for drip feed, deep water culture, or flood and drain systems.

Handling Notes

Rinse before first use if a finer dust layer is visible, then use as a stand-alone medium or blend with soil for additional aeration and drainage in containers.

Frequently Asked Questions

What makes this different from standard clay pebbles?

It is fired at extremely high temperatures and specially treated for a more consistent, low EC and stable pH.

What size are the pebbles?

They are sized between 8mm and 20mm.

Which systems work best with this medium?

Drip feed, deep water culture, and flood and drain systems all work well.

How porous is this medium?

Total porosity is approximately 85% by volume, supporting strong root oxygenation.

Can this be used in aquaponics?

Yes, GEOLITE clay pebbles are suited to hydroponic, hydroculture, and aquaponic setups.