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MILLS Ultimate PK

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Included in the A-Grade Rewards Program


The NPK of Mills Ultimate PK is 0-7-6

MILLS Ultimate PK - A-Grade Hydroponics MILLS Ultimate PK - A-Grade Hydroponics MILLS Ultimate PK - A-Grade Hydroponics


Mills Nutrients Ultimate PK
Some varieties will call for the use of this product earlier than others, always pay attention to the plant and the signs they give when PK is to be introduced.

In nearly all cases you will be good to follow the Mills pays the bills formula chart as per their advice, if you have something thats flowering much quicker than expected
A-Grade Hydroponics advises you add it a week earlier. 

Ultimate PK is a powerful heavy weight bloom booster designed to be used the last 2-4 weeks of the flowering phase. The superior composition of ultimate PK provides the plant with all the nutrients needed during the ripening phase for more abundant fruit sets, massive buds, harder cell structure and the best aroma and flavour possible.

Read the reviews on this powerful hydroponic flowering additive, everyone that buys this absolutely loves it. One of the best bloom booster you can get for sure. 

  • Larger, harder flowers
  • Higher terpenes
  • Increased yield & weight
  • Can be used in all substrates (Coco, hydro & soil)

If you're after rock hard flowers that have a great aesthetic/ bag appeal you need to use this so you can see it for yourself. Mills pays the bills. 


*All orders are dispatched in unmarked boxes to maintain your privacy.*


Orders are shipped via Australia Post or Big Post. Orders are generally dispatched on Tuesday, Wednesday and Friday. Please allow for additional delivery time for remote areas. If you require express delivery, please contact our sales representatives at 03 9555 6667 or email to obtain a quote. 

Couriers will attempt delivery to the specified address. If no one is home to receive the delivery, the couriers will leave your parcel somewhere safe. If there is no safe place, re-delivery or collection will be organised.

We reserve the right to charge for any redeliveries if they occur. You are welcome to call us if special arrangements need to be made.  

Due to the increasing frequency of online fraud and theft, we are unable to ship to P.O. Boxes and Parcel Lockers.


All freight charges are calculated on weight, dimensions and location. We are committed to keeping shipping charges at a minimum and do not charge handling fees.

Please note: Freight costs are subject to change. Regional areas, large and bulky orders, and tail-lift delivery occasionally incur an additional levy. Should these costs need to be amended it will be to reflect the actual charges, and not incur additional ‘shipping and handling’ fees.

We will notify you if this rare situation occurs.



All payments must be cleared before dispatch. Payments can be made online via PayPal, AfterPay or Electronic Funds Transfer. Payments can also be accepted via credit card by phoning 03 9555 6667.

Please allow at least 24 hours for payments to clear.


You will be notified immediately if an item is permanently unavailable, with options for a replacement item at equal or higher value, refund or store credit.

All refunds will clear within 3-5 business days. Store Credits will be issued as an electronic Gift Card to be used online or in-store.


We comply with all necessary restrictions and guidelines when shipping any products classified under the Dangerous & Prohibited Goods & Packaging Post Guide.

If, for any reason in compliance with these guidelines, we are unable to fulfil an order a refund will be issued immediately.