Category Archives: Grow Medium

Hydroton Expanded Clay Pebbles

hydroton expanded clay

What Are Hydroton Expanded Clay Pebbles?

Hydroton is a brand name that is interchangeably used with expanded clay and clay pebbles. It’s one of the most popular grow mediums used by hydroponic gardeners. Hydroton expanded clay pebbles come from mined clay that is heated in a kiln to over 2000 degrees. This causes the material to expand like popcorn making it light and porous.  Hydroton expanded clay pebbles are lightweight and can come in circular ball shapes varying in sizes. Hydroton doesn’t compact and since it’s porous, allows for excellent water and airflow. [...] 

Using Rockwool For Seed Germination

preparing rockwool

Rockwool is a popular starter medium that has been used a long time with hydroponics. Smaller rockwool cubes are used for cuttings or seed germination and then transplanted into hydroponic systems. Larger cubes or slabs can be used to grow larger plants. It works well as a grow medium because it’s great at both maintaining moisture and allowing air to the roots. Rockwool is not pH balanced and will need to be adjusted before getting started. [...] 

7 Different Hydroponic Grow Mediums

Many different types of grow medium can be used in hydroponics.  There really is no right answer to the question of what hydroponic grow medium works the best. It varies depending on what you’re growing, the type of hydroponic system you’re using, and your personal preference. There could be several grow mediums that could fit your needs which may bring it down to price and availability. Here’s an overview of some of the main hydroponic grow mediums used. [...]