Rock Resinator Heavy Yields — Phosphorus & Potassium Bloom Booster for Dense Flowering
Best for: Growers wanting to maximise flower density and weight without juggling multiple bottles
Our thoughts
Rock Resinator is a proper all-in-one flowering additive that's been doing the job for 40+ years. You're paying for formulation and results, not hype. The research backs the density gains, though you'll want to plan for structural support when the flowers get heavy — and that's a good problem to have.
Rock Resinator Heavy Yields is a concentrated phosphorus and potassium supplement designed to increase flower mass and density during the flowering stage. With an NPK ratio of 0-7-8, it combines highly mobile phosphorous, amino acids, and phyto-stimulant compounds to encourage additional flowering sites and boost essential oil production. This is a purpose-built bloom booster for growers who want straightforward, proven feeding without mixing multiple products.
How it compares
Rock Resinator positions itself as an all-in-one formulation in a crowded bloom booster market.
- More concentrated than budget alternatives — you need less volume per feed
- All-in-one approach means fewer bottles than competitors requiring separate potash and carbohydrate products
- Premium pricing reflects 40+ years of hydroponics heritage and California-tested formulation
- Direct alternatives like Terpinator cost less per litre but require higher application rates to match results
In straightforward terms: you're buying established formulation and reliability, not just phosphorus and potassium in a bottle.
Usage guidance
Rock Resinator works across all growing systems — soil, coco, hydro, whatever you're running.
Standard bloom feeding
Apply from week 2 of flowering through to harvest. Start at 4mL per gallon (roughly 1mL per litre) and build to 6-10mL per gallon depending on your system and how heavy you want to push it. Shake well before every use.
Mild solution (gentle introduction)
Run 6mL per gallon for the full flowering period if you're new to bloom boosters or running a lighter feed schedule.
Strong solution (maximum density)
Use 8-10mL per gallon for the final 2-3 weeks if you're chasing maximum flower weight. Watch branch strength — heavy flowers will snap without support.
Finishing protocol
Some growers run 4mL per gallon throughout bloom, then increase to 8mL per gallon for the final 2 weeks. Citric metabolites in the formula are designed to accelerate nutrient uptake during this critical phase.
Important
Don't stack additional potash products on top — Rock Resinator already contains everything you need. It's compatible with all standard nutrients except sterilising products like peroxides and chlorides.
Technical specifications
- NPK Ratio: 0-7-8
- Active ingredients: Highly mobile phosphorous, amino acids, citric metabolites, natural plant extracts, phyto enzymes
- Key function: Accelerates krebs cycle for enhanced flower density and essential oil production
- Format: 1 litre concentrate bottle
- Bottle dimensions: 4.5 x 3 x 7 inches
- Weight: 2.6 pounds per bottle
- Compatibility: All growing systems, all media types, all standard nutrients (except sterilising agents)
- Plant Growth Regulators: None
Who this is for
- Growers serious about maximising flower density and final weight
- Anyone running hydroponic or recirculating systems where precise feeding matters
- Experienced growers wanting to simplify their bloom feeding without multiple bottles
- Growers chasing heavy, dense flowering with strong surface characteristics
- Anyone who wants proven formulation backed by 40+ years of professional hydroponics history
Less suited to growers on a strict budget — there are cheaper alternatives that deliver similar results, just at higher application rates.
Our take
Rock Resinator is a legitimate bloom booster that delivers on density and weight claims. The formulation works, the brand's got pedigree, and the all-in-one approach cuts down on bottle clutter. Be aware that heavy flowers mean heavy branches — make sure your structure can handle it.
The premium price versus alternatives like Terpinator is real, but you're paying for concentration and established results. If budget is tight, cheaper bloom boosters will get you 80% of the way there at half the cost. If you want proven, straightforward feeding that maxes out flower mass, worth picking up while stock lasts.
