Can I use River Rocks in my Home Built Hydroponic System?

This Hydroponics Hobbyist wants to know if he can use river rocks in his hydroponic system. Below is where I answer his question along with my opinions about other hydroponic media.

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This is my first submission for Sure To Grow's You Tube contest Show Some Love, and I WON!!!

Going from Hydroponics to soil you can see the roots growing right through the STG Cube.

Going from Soil to Hydroponics, even after a couple weeks the surface of the STG Cube is still white and clean.

This video was made mostly with out takes and extra footage from my other videos. You will see I use STG Cubes in many of my videos. Please explore my Youtube channel and take a look around, I think you will enjoy them.

Have Fun! More videos on the way.