Advanced Nutrients Overdrive - Late-Bloom Ripener for Heavier Harvests
Best for: growers in the final stretch of flowering who want to add weight and finish out their buds before the flush.
Our thoughts
Overdrive is built for the last push - the two or three weeks before flush where a lot of growers just coast on their existing feed. Adding a dedicated late-stage booster here is where you can pick up real extra weight, and Overdrive is dosed simply enough that it's not a hassle to add at a point in the grow when you're already juggling flush timing.
Overdrive is a late-phase bloom booster with an NPK ratio of roughly 1-5-4, weighted towards phosphorus and potassium to support final bud development and ripening. It's intended for the closing stage of flowering, used from around three weeks before harvest through to your pre-harvest flush.
Dosed at 2ml per litre, it's added on top of your existing base feed and any other bloom boosters you're already running, rather than replacing them.
How it compares
Overdrive competes with the other well-known late-flower ripeners on the market.
- Compared with Canna PK 13/14, which is also used for a short late-flower burst, Overdrive runs over a slightly longer window of two to three weeks rather than a very short spike.
- Compared with House & Garden Bud-XL, a similarly positioned late-bloom booster, Overdrive is Advanced Nutrients' equivalent entry in the same category.
- Compared with running no dedicated late-stage booster, adding one for the final weeks is one of the more cost-effective ways to add finishing weight to an otherwise unchanged feed.
It's a specialist late-window product rather than an all-cycle additive, so it's best bought alongside a plan for when your flush will start.
Usage guidance
Used for a defined late window rather than the whole bloom cycle.
Dosing
Add at 2ml per litre with every feed, keeping to the recommended rate - going over it risks nutrient burn rather than extra benefit.
Timing
Start around three weeks before your planned harvest and continue through to when you begin your pre-harvest flush.
Compatibility
Works alongside your existing base feed and PK boosters - it's an addition, not a replacement.
Technical specifications
- NPK ratio: approximately 1-5-4
- Format: liquid concentrate
- Dosage: 2ml per litre
- Use period: final 2-3 weeks of flowering, through to flush
- Compatible media: hydroponics, coco coir, soil
- Brand: Advanced Nutrients
Who this is for
- Growers in the last few weeks of flower looking to add final weight before flush
- Anyone already running Big Bud or a similar PK booster who wants a dedicated finishing product
- Growers who plan their flush timing in advance and want a booster to bridge the gap up to it
Our take
The final weeks of flower are where a lot of the visible bulk gets added, and Overdrive is built specifically for that window rather than trying to cover the whole cycle. Used at the right dose and the right time, it's a sensible way to finish strong.
Does exactly what it should, day in, day out - worth adding to your plan for the last few weeks if you're chasing extra weight at harvest.
