what do you put the plants in when you use hydroponics?

[Greenthing]

If you use Rockwool soak it in the correct PH water overnight then let the water drain out before use.
I used water at a PH of 5.5 to 5.8 for NFT.:jointsmile:

Greenthing Reviewed by Greenthing on 11-02-2008. what do you put the plants in when you use hydroponics? I know people either use those rocky things or those spongy things, or both, but i can't remember the names of them. Rating: 5