Add Zone TR-3 or Zone VR-5 — check pH
Chelated micronutrients go in first. Both TR-3 and VR-5 double as pH adjustment tools. Check and adjust pH before proceeding.
OMRI Certified⚗ TR-3 & VR-5 adjust pH — target 5.5–6.5
⚗Zone TR-3 and VR-5 both double as pH adjustment tools. A solution pH of approximately 5.5 will improve micronutrient stability and is optimal for foliar applications.