Those are hydroton pebbles. Puffed clay.


1. Provides a medium for the roots to grow in. (In hydro.)

2. Helps maintain a good air/water ratio.

3.Slows evaporation of water.

4. Prevents mold.

5. Probably other stuff I can't think of. I'm high too.

Hope this helps.

TGF
TheGreenFog Reviewed by TheGreenFog on . rocks in all the pictures i see there are rocks in the pots on top of the soil in a circle i was just wondering if someone could quickly tell me what that does for the plant just really curious and high Rating: 5