Grodan Propagation Tray 3.6x3.6cm (77pc.each)

Plastic tray with drain outlet. Comes with 77 mini stonewool (rockwool) cubes. Ideal for propagation, seed or cuttings. For use with soil or hydro.
The propagation blocks are individually wrapped in plastic which is easy to remove and protects the roots.
These stonewool (rockwool) blocks should be soaked in pH 5.5 water overnight before you use them.
They come with a neutral pH value of 7.0.