Description
Quick Answer
Nutrifield PK Heavy is a concentrated liquid phosphorus and potassium additive for the bloom stage. Mix 15mL per 10L of nutrient solution (1.5mL/L). It is available in 1L, 5L and 20L sizes.
Product Description
PK Heavy supplies phosphorus and potassium during flowering, when these macronutrients are used in plant energy transfer, water regulation and reproductive growth. The liquid format is easy to measure into a prepared nutrient solution. Use it as a bloom-stage additive within an appropriate base feeding program rather than as a complete standalone fertiliser.
This listing avoids guaranteed yield, flower-size and performance claims. Results depend on crop type, environment, root-zone conditions and the rest of the nutrition program.
Key Features
- Liquid phosphorus and potassium additive for the bloom stage
- Verified application rate of 15mL per 10L of nutrient solution
- Equivalent rate: 1.5mL per litre
- Three pack sizes for small, medium and high-volume feeding programs
- Concentrated product intended to be diluted before use
Available Sizes and Variants
| Size | Live Shopify price | Use case |
|---|---|---|
| 1L | $31.00 AUD | Small gardens and trial use |
| 5L | $103.00 AUD | Regular feeding programs |
| 20L | $310.00 AUD | High-volume and commercial use |
Specifications
| Brand | Nutrifield |
|---|---|
| Product | PK Heavy |
| Format | Concentrated liquid additive |
| Primary nutrient focus | Phosphorus (P) and potassium (K) |
| Growth stage | Bloom / flowering |
| Application rate | 15mL per 10L (1.5mL/L) |
| Available sizes | 1L, 5L and 20L |
Package Contents
One sealed container of Nutrifield PK Heavy in the selected 1L, 5L or 20L size.
Directions for Use
- Prepare the base nutrient solution for the crop and growing system.
- Measure 15mL of PK Heavy for every 10L of nutrient solution.
- Add the measured concentrate to the solution and mix thoroughly.
- Use during the bloom stage and follow the product label and current feeding program.
Do not apply the undiluted concentrate directly to plants.
Care, Storage and Safety
- Keep in the original container, tightly closed and upright.
- Store in a cool, dry place away from direct sunlight and temperature extremes.
- Keep out of reach of children and pets.
- Avoid ingestion and contact with eyes or skin; use suitable protective equipment when handling concentrates.
- Use clean measuring equipment and do not return unused mixed solution to the container.
- Read and follow the label and any available safety data before use.
Buyer FAQs
What is Nutrifield PK Heavy?
It is a concentrated liquid phosphorus and potassium additive for bloom-stage nutrient programs.
What is the application rate?
Use 15mL per 10L of nutrient solution, equal to 1.5mL per litre.
Which sizes are available?
The live Shopify variants are 1L, 5L and 20L.
When should I use it?
Use it during the bloom or flowering stage, following the product label and the rest of the feeding program.
Is PK Heavy a complete base nutrient?
No. It is a phosphorus and potassium additive and should be used within an appropriate base nutrition program.
Can I pour the concentrate directly onto plants?
No. Measure and dilute it into the nutrient solution before application.
Can I use a stronger dose for faster results?
Do not exceed the label rate unless qualified crop guidance specifically directs otherwise. More concentrate is not automatically better.
Does it guarantee larger flowers or higher yields?
No. Crop outcomes depend on genetics, light, climate, irrigation, root health and the complete nutrition program.
Is it suitable for every growing system?
Compatibility can vary. Check the product label and your system or feed-program instructions before use.
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Customer Reviews
This is a fantastic product. It's made my grow so much more efficient. I'll definitely be shopping here again.
I'm blown away by the quality of this. It's a proper piece of equipment. Five stars from me.
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Been using this for a few weeks now and I'm seriously impressed. Solid build and does exactly what it says on the tin. My plants have never looked healthier.
Absolute game-changer. Fair dinkum, this is the best bit of kit I've bought in ages. Does exactly what you need it to do, no mucking about. Too easy!
Really happy with this. The quality is ace and the price was spot on. The team in Sunshine North were super helpful when I called up with a question.
Deadset legend, this product. Took my grow to the next level. So glad I found this site, the range is massive. Will be back for more.
Quality is unreal. You can tell it's not cheap rubbish. It's a proper bit of gear that does the job well. Postage was lightning fast too.
