Grodan Wrapped Slab - 300 x 900 x 75mm PF200/500 Lamp runs at 400 volts

Lamp runs at 400 volts for highest output

Are you someone with strong organic beliefs

The walls are well-sealed so no light escapes

It has a max temperature rating of 200 Celsius and has four layers for extra strength

This is what is known as “burning” your plants because you’re using too much of the wrong nutrients

Grodan Wrapped Slab - 300 x 900 x 75mm PF200/500 Lamp runs at 400 voltsGrodan Wrapped Rockwool Slab 300 x 900 x 75mm 1X Grodan Rockwool Slap Wrapped 30 X 90 X 75cm Thanks to their revolutionary hydrophilic fibres, Grodan substrate slabs and blocks produced using this technology offer users considerable advantages over other propagation substrates. Tried and proven to be the best propagation substrate available.