Rockwool vs Coco Coir vs Clay Pebbles: Best Hydroponic Growing Medium?

This Video is from the Youtube channel: “Proponics.”. 

Which growing medium should you use? Rockwool, coco coir and clay pebbles (hydroton) compared on water, air, pH and price, with perlite and vermiculite too. Which systems each one suits, and the mixes growers use.

0:00 Why plants need a medium
0:20 Rockwool
0:51 Coco coir
1:20 Clay pebbles (hydroton)
1:55 Perlite and vermiculite
2:18 Which should you use?

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