These are the more round variety of pebbles,more uniform shape.

There are many uses for clay pebbles, also called leca (lightweight expanded clay aggregate), including propagation, hydroponics, and as an amendment to your growing medium. You can start cuttings in leca + water, grow plants without using soil, or to aerate other soils.

A few helpful videos to get you started:

• The basics of semi-hydroponics (LECA) from a beginner
• Converting Plant to LECA (Passive-Hydro/Semi-Hydro)
• How to Get Started with LECA!
• LECA FOR BEGINNERS | COMPLETE GUIDE (What You Need, How To Transfer Plants, How To Care For Them)

Rinse pebbles before use to get rid of dust. (Aim to do this outside or in a bucket inside, not letting the clay dust water go down your pipes.)

~2L