Description
Organic Potassium Bloom Booster for Harder Flowers & Increased Resin Production
Bio Diesel Rhino K is a premium organic potassium bloom booster formulated to maximise flower development without relying on phosphate-based PK additives. Containing 15% organic potassium, Rhino K promotes increased flowering sites, denser blooms, enhanced trichome production, and improved terpene expression while remaining completely phosphate-free and microbe-friendly.
Designed for use in soil, coco coir, and hydroponic systems, Rhino K supports beneficial microbial life while directing plant energy towards flower formation, resin production, and essential oil development. Enhanced with fulvates and vitamins, it improves nutrient transport throughout the plant, resulting in harder flowers, richer colours, and cleaner harvests with no harsh residues.
Key Features
- Premium organic potassium bloom booster
- 15% organic potassium
- Phosphate-free and microbe-friendly formula
- Suitable for organic cultivation
- Promotes increased flowering sites
- Encourages denser, harder flowers
- Boosts trichome and terpene production
- Enhances bud calyx development
- Improves nutrient movement with fulvates and vitamins
- Leaves no harsh residues and flushes cleanly
- Suitable for soil, coco coir, and hydroponic systems
Benefits
- Produces larger, denser, and firmer flowers
- Increases resin, terpene, and essential oil production
- Supports vibrant colour expression during late flowering
- Encourages efficient nutrient transport to developing flowers
- Protects beneficial microbes by avoiding phosphate-heavy formulations
- Flushes cleanly for a premium-quality harvest
- Compatible with both organic and conventional feeding programmes
Specifications
| Specification | Details |
|---|---|
| Brand | Bio Diesel |
| Product | Rhino K |
| Product Type | Organic Potassium Bloom Booster |
| Potassium Content | 15% Organic Potassium |
| Formula | Phosphate-Free Liquid Concentrate |
| Added Ingredients | Fulvates & Vitamins |
| Application Stage | Flowering |
| Growing Media | Soil, Coco Coir & Hydroponics |
| Suitable For | Indoor & Outdoor Cultivation |
Why Choose Bio Diesel Rhino K?
Unlike traditional PK boosters that rely on monopotassium phosphate, Bio Diesel Rhino K delivers organic potassium without compromising beneficial microbial activity. Its phosphate-free formulation supports healthier root biology while improving flower density, resin production, terpene development, and colour expression. The addition of fulvates and vitamins ensures nutrients are efficiently transported where they're needed most, helping produce heavier, higher-quality flowers with a clean finish.
Application
| Growth Stage | Application Rate |
|---|---|
| Early Flowering (Weeks 1–2) | 1–2ml per litre as a root drench |
| Early Flowering Foliar Spray | 1ml per litre, twice weekly during lights-off before flowers fully develop |
| Mid to Late Flowering (Weeks 5–8 of a 9-week cycle) | 1–2ml per litre with each watering for approximately 3 weeks before the final flush |
Handy Tip: For best performance, use diluted Rhino K within 48 hours of mixing. For reservoir systems, add Rhino K up to 48 hours before scheduled nutrient solution changes.
FAQs
What makes Rhino K different from traditional PK boosters?
Rhino K is phosphate-free and relies on 15% organic potassium, making it compatible with beneficial microbes while promoting exceptional flowering performance.
Can Rhino K be used in hydroponics?
Yes. Rhino K is suitable for hydroponic systems, coco coir, and soil cultivation.
Can Rhino K be used as a foliar spray?
Yes. During the first two weeks of flowering, it can be applied as a foliar spray at 1ml per litre during lights-off before flowers have fully formed.
Does Rhino K leave residue in the growing medium?
No. Rhino K is formulated to flush cleanly without leaving harsh residues, helping produce a cleaner final harvest.
Is Rhino K suitable for organic growing?
Yes. Rhino K is suitable for organic production and is designed to support healthy soil biology while enhancing flowering performance.


