Description
Phosphorus on its own, for when that is all the plant is short of
Hesi Phosphorus Plus supplies phosphorus without the potassium load of a PK booster. It is used where a plant needs more phosphorus for flower formation but the potassium in the base feed is already sufficient - a distinction most growers never get to make because the two are almost always sold together.
Key Benefits
- Phosphorus without extra potassium - useful when a PK would push potassium too high
- Early and mid flower - supports flower formation rather than late bulking
- Low EC contribution - a targeted addition rather than a broad one
- Any base feed - mineral or organic
- Works alongside PK 13/14 - different jobs at different points in flower
Potassium lock-out from stacking PK boosters
Running two or three PK products together drives potassium high enough to block calcium and magnesium uptake, and the plant shows deficiency symptoms while sitting in a rich reservoir. Adding phosphorus alone avoids the collision entirely.
How to Use
- Early flower: 2 ml per litre from the stretch through site formation
- Mid flower: 3 ml per litre at every watering
- With a PK: use earlier in flower, then swap to PK 13/14 for the bulking weeks
- Watch for: dark, clawing leaf tips mean total phosphorus is too high - back off
- Media: soil, coco and hydroponics
Technical Specifications
- Role: Phosphorus supplement
- Window: Early to mid flower
- Typical dose: 2 to 3 ml per litre
- Use with: Hesi PK 13/14 later in flower
- Media: Soil, coco, hydroponics
