Hy-Gen Bud Link gives your plants the soluble silica which is normally present in normal soil culture which, up until now, has been missing from hydroponic solutions. BudLink is the missing link in hydroponics. - See more at: http://thehydrostore.co.uk/hy-gen-bud-link-3894-p.asp#sthash.slZpRuZ0.dpuf Learn More