The Ross Root Feeder Heavy Duty model #1200D will deliver fertilizer and water directly to tree and shrub roots. Is easily attached to a garden house; adjustable flow rate lever allows light or heavy watering and fertilizing. Ideal for watering during dry periods and preventing loss of water through evaporation. Used but in very good condition. Feeder alone retails at amazon.ca for over $100. INCLUDED are pre-measured refills to provide the correct balance of fertilizing nutrients: total refills = 204 (equivalent package of just 36 refills retails over $60) • 10 boxes 10-20-20 Acid Loving Evergreen formula: each box has 12 refills : 10 x 12 = 120 refills • 7 boxes 25-10-10 High Nitrogen Tree and Shrub formula: each box has 12 refills 7 x 12 = 84 refills