Mills Nutrients Ultimate PK

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
Mills Nutrients Ultimate PK – 1L
Mills Nutrients Ultimate PK – 5L


Ultimate PK by Mills Nutrients of Amsterdam was brought to the market after intense research and field testing to give you, the grower, the ultimate heavyweight bloom booster that can be used in all growing techniques, whether hydro, coco or soil.

Designed to be used in the last 2-4 weeks of the flowering cycle, Ultimate PK will give your plants that final boost of phosphorous and potassium as they approach harvest to help them to produce an abundance of healthy, dense fruits that push final yields beyond expectation.

But that’s not all, as Ultimate PK doesn’t just give the appearance of bountiful fruits, it also helps with the overall aroma and the final taste of the crop, making this, as the name suggests, the ultimate in PK bloom boosters for your plants.


2ml per litre during the final 2-4 weeks of the bloom cycle.


Read on our blog: The Importance Of PK Boosters For Bigger & Better Yields

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. 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.
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Click & Collect
Collect your online orders in as little as under an hour*! Simply pay online, choose your store & collect for free! Available from Manchester & Huddersfield (*subject to stock availability).
Brand MIlls
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