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Add-It Fertilizer Injector

Add-It Fertilizer Injector

Add-It® Fertilizer Injector Applying Fertilizer to your garden is not the labor-intensive task it used to be. If you have a drip irrigation system, you already know you can no longer apply dry fertilizer and expect it to be leached into the soil by overhead watering, where the roots can absorb it. With a drip irrigation system, the fertilizer has to be mixed with water as it’s applied to the plants. This method is known as fertigation. Add-It fertilizer injector is used for applying the optimum rate of soluble, solution fertilizer or additive through your drip system directly to the plants. Now you can fertilize without cumbersome spreaders. Simply let Add-It do all the work for you!

Category: Fertilizer Applicators

Available ModelsPartPrice
A059 : ADD-IT Fertilizer Injector, Hose End, 1 Pint
ADD-IT Fertilizer Injector, Hose End, 1 Pint A059$22.95 ea.
A060 : ADD-IT Fertilizer Injector, 1 1/2 Quart
ADD-IT Fertilizer Injector, 1 1/2 QuartA060$81.96 ea.

Add-It can be attached to any garden valve or hose bib. Add-It comes complete with an atmospheric vacuum breaker that attaches directly to the hose bib, and a fill funnel. Add-It will save you time and money.

Best of all, you can use your favorite totally water-soluble granular fertilizer such as Scotts Miracle Gro® or Peters Professional®, Bandini Pro Choice®, or Grow More®. You may also want to consider dispensing a wetting agent (surfactant) like Grow More E-Z Wet Soil Penetrant 26® to help breakup compacted soils, compost tea to increase micro organisms in the soil, micro-nutrients or Vitamin Institute’s SUPERthrive™ containing vitamins and hormones for healthier plants, or vitamin B-1 when transplanting trees and shrubs.

Keep in mind, Add-It is not like many of the other fertilizer injectors or applicators on the market today. Add-It is totally proportioning, therefore the injection rate is the same from beginning to end. Through a unique hydraulic design using the kinetic energy of the water flowing through the Add-It, a small amount of water is diverted into the tank, and an equal amount of fertilizer and/or additive is forced back out into the flow of water. It’s amazing, simple and effective. The Add-It Proportioning Fertilizer Injector and Foliage Feeder is extremely easy to install and simple to operate!

  • Instructions for Add-It Fertilizer Injector

    To initially fill the injector:

    1. Remove the top fill cap.
    2. Insert a fill funnel into the opening and pour in liquid solution (only pour liquids into the injector!).
    3. Fill the unit completely. Replace the cap and the injector is ready for operation.
    4. Turn on the irrigation system. 

    Note: Only connect this injector to a standard garden spigot with adequate clearance for canister to remain upright with fill cap facing up.  If the unit is installed into a faucet a backflow device is recommended.

    PDF available here for “manuals” tab link:

    Pint size

    Quart size