Advanced Nutrients OVR (4L)

OVR (Overdrive 2.0) is the 8th-Generation Elite Series evolution of Advanced Nutrients' legendary late-bloom finisher — and the ultimate zero-nitrogen bud hardener for unlocking your most satisfying harvest yet. Combining the original Overdrive late-bloom formulation with a precision dose of zero-nitrogen calcium and the complexed and chelated micronutrients of Tetraplex Iron, OVR increases flower density while delivering the calcium and micronutrient ratios that produce clean burn, flawless white ash, and the kind of finish that separates your flower from the field. This 4L bottle provides the concentrated formula you need to maximize bud hardness and quality during the critical final stages of bloom, ensuring every harvest meets the highest standards.