Mills Nutrients - Ultimate PK Size:1 LitreMills Nutrients Ultimate PK Phosphite Based Bloom Booster for Final Weeks Flowering Best for: Growers pushing the finishing phase and wanting denser cell structure, richer flavour, and heavier yields in the last 2 4 weeks of bloom Our thoughts Mills Ultimate PK does one job exceptionally well it hardens and finishes your crop when it matters most. Phosphite based formula means better bioavailability than standard PK products, and it won't accumulate
but nor is it complicated once you've trained staff
Recommended max capacity: HC-100A up to 110L (rated 220L)
and the hard water formulation shows Shogun actually thinks about UK growers instead of just selling a generic global product
Post-peak bloom (week 8+)
Product type: Concentrated flowering stimulator and amino acid booster
The VIVOSUN system works across different grow setups:
Budget-conscious growers who don't want to pay premium prices for premium results
Rather than stacking multiple products — a PK fertiliser
so you can dial back intensity if plants are too young or adjust for your specific growing environment
plant growth regulator-free
Basic digital meters (£13–20): Better accuracy than analog
The formula addresses actual coco chemistry — the calcium and magnesium binding problem is real
