10 x 4′ Rockwool cubes with 3.5 cms hole used for transplanting the smaller cubes into once they are rooted. We advise strongly that before you use these cubes you pre-soak in water with a PH balance of 5.5 and EC of 1.8 Formulex is recommended for creating the perfect EC for rockwool.
12 Rockwool blocks for use in Hydro growing systens
Dimensions 4 x 4 x 3″ each Large hold ideal for placing of jiffy pellet
pack of 12 ready to use
Frequently Bought Together
This item: 12 Rockwool blocks for Hydroponic system. bored for placing of jiffy pellets (4 inch)£16.98