Each black plastic Fertilizer Applicator contains a fine mesh tubular filter screen which can be periodically flushed by opening the cap at its base. Slow-dissolving fertilizer such as the Irrigro BloomGro or GreenGro organic Fertilizer packs can be put into the tubular filter screen compartment to provide periodic nutrients to the plant root zone via the irrigation water.
The Fertilizer Applicator comes with with two 3/8 inch barbed Female Hose Connectors (38-FHC) for insertion into a 3/8 inch ID Header Hose (38-HH). To minimize the very small risk of back-flow siphoning of fertilized water or contaminated irrigation water into a household water system it is recommended that the Fertilizer Applicator be located after the entry of the water to the Header Hose of a system, and that a Fertilizer Anti-Siphon Valve (FERT-ASV) be installed upstream of this Fertilizer Applicator (preferrably at the house faucet).
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