Growool Granulated Premium Rockwool - 10L soil control * 4 x Smart-valves

* 4 x Smart-valves

Housing: Water-resistant

T Rooting Sponges 24 Cell Filled Trays

and it has a replaceable electrode to extend the lifetime of the combo pen

flowers and fruit formation require higher levels of phosphorous

Growool Granulated Premium Rockwool - 10L soil control * 4 x Smart-valvesGrowool Granulated Premium Rockwool is not a 'granulated' rockwool as such but more of a 'spun' rockwool making its appearance and consistency more like 'fairy floss'. Flushed with pH adjusted water set at 5. 5. The pH of the nutrient solution should also be 5. 5 for best results. Like all rockwool media, Premium Floc has a high water holding capacity so it does not need to be watered very often. Premium Floc is an inert, sterile medium well suited