Gold Label Ultra PK - 1L

In stock online
Standard Delivery £6.95*
Free Delivery - orders +£65 Free Delivery - orders +£65
Plain Packaging Used Plain Packaging Used
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Product Name Qty Price
Gold Label Ultra PK - 1L


The innovative Super FK formula, allows our Ultra PK to be up-taken across the broadest pH range. Additionally, our enhanced PK doesn't interfere with Calcium or Magnesium uptake resulting in healthy growth and flowering throughout the generative phase.

Ultra PK delivers phosphorus and potassium during the generative phase, to increase flower development and fruit production, allowing the plant to reach its full potential. It does this while simultaneously increasing plant quality and essential oil production for professional quality and yields.

The professional Ultra PK will keep drip lines clean, can be used with all media's, systems and as part of any nutrient regime. 

For the best results, use as part of the complete Gold Label range.


  • Shake well before use.
  • Never mix pure nutrients together, always dilute in water.
  • Add 0.25ml - 0.5ml Gold Label Ultra PK per litre of water during the flowering phase.

Guaranteed analysis Ultra PK:

  • Phosphate P (P2O5)
  • Potassium (K2O)


  • Keep out of reach of children.
  • Keep bottle closed when not in use.
  • Liquid to remain in bottles originally supplied.
  • Keep away from frost and direct light.
  • Product at risk of crystal formation at low temperature. Recommended storage temperature 5 - 30°C.
Delivery & Returns
Free Delivery
We are pleased to offer free standard shipping to UK Mainland on all orders over £65.00 *Heavy item surcharges are still applicable.
Next Day Delivery
In a hurry for your order? Order before 1 pm Mon - Thurs for next working day delivery *subject to stock availability T&C's apply.
Different delivery address?
Do your goods need shipping to an alternative address? If so, paying by bank transfer gives you the freedom to have them delivered to anywhere in the UK.
Free Returns
Faulty or damaged item? No problem, contact us on 0800 038 7100 or email customer service and we can arrange a free collection.
Plain Packaging
All parcels, no matter how big or small, are dispatched in plain packaging using black wrap that's secured using 'fragile' tape.
How to Pay
Credit / Debit Cards
We accept all major credit and debit cards. All transactions are processed using a secure server via SagePay. Please note: When paying by credit card we can only ship to the card statement address.
Simply select this option at checkout if you prefer to pay through PayPal. Please note: When paying by PayPal, we can only ship items to the account owners confirmed address.
Bank Transfer
Select the option for Bank Transfer at checkout if you wish to receive your item anywhere within the UK. Please use your order number as payment reference.
Click & Collect
Collect your online orders in as little as under an hour*! Simply pay online, choose location & collect in-store for free! Available from Manchester & Huddersfield (*subject to stock availability).
Brand Gold Label
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