Hydro Systems IWS Flood and Drain > starting at £399.99 IWS Dripper > starting at £399.99 IWS Deep Water Culture > starting at £379.99 12 Pot Air Kit > starting at £109.99 18 Pot Air Kit > starting at £129.99 24 Pot Air Kit > starting at £149.99 Oxypot Single Kits > starting at £14.99 Flexitanks > starting at £44.99