Rock Wool?

[MrMR]

Where can i get rock wool from? And how much does it cost?

[Zandor]

Search online, check eBay or check the yellow pages for a hydroponics store in your area.

[ronjohn420]

depending on the size........

i paid 9.00 us dollars for 45 1inch cubes

as a matter of fact, the same cube im holding in the avatar