Description
The Macro-Nutrient Half of a Commercial-Grade Two-Part Dosing System
Veg+Bloom DOS Part A is a concentrated stock powder built specifically for proportionate mixers and fertiliser injectors such as Dosatron units, rather than for measuring into a reservoir by hand. It carries the nitrogen-led macro-nutrient and trace mineral blend of Veg+Bloom's two-part DOS base, working alongside its companion Part B (sold separately) to feed crops from seedling through to harvest in soil, coco coir or hydroponic systems.
Key Benefits
- Built for injector dosing – mixes into a stock solution that a Dosatron or similar proportionate mixer draws from automatically, instead of manual reservoir dosing
- 8-0-0 NPK macro-nutrient concentrate carrying nitrogen, potassium and a full trace-mineral package for vegetative growth and root development
- Consistent stock concentration – every batch is mixed to the same ratio, so feed strength stays repeatable run after run
- Powdered concentrate – far cheaper to ship and store in bulk than an equivalent liquid two-part feed
- Suitable for soil, coco coir and hydroponic systems run through an injector or proportionate mixer
Keeping Feed Strength Consistent Across a Big Reservoir
Hand-dosing a large reservoir or a drain-to-waste run makes it hard to hold EC steady — measuring errors compound across a growing area, and concentration drifts as plants draw down one nutrient faster than another. DOS Part A is built to remove that variance: mixed at the manufacturer's stock ratio and fed through an injector, every litre of water leaving the mixer carries the same concentration, run after run, without anyone measuring a reservoir by hand.
How to Use
- Stock solution: mix Part A at 360g per US gallon (around 95g per litre) of water to build the concentrate your injector draws from
- Injector dilution: set the mixer to a 1:100 ratio to bring the stock solution down to feed strength
- Companion product: use alongside Veg+Bloom DOS Part B (sold separately) for the complete two-part feed — Part A carries the vegetative macro-nutrient load, Part B adds the extra phosphorus and potassium for flowering and fruiting
- Coverage: at the standard 1:100 dilution, 100lb of Part A treats around 12,000 US gallons of finished feed water, roughly 3,000 gallons from the 25lb size
- Suitable for: soil, coco coir and hydroponic systems fed through a Dosatron or similar proportionate injector
- NPK: 8-0-0 (Part A)
- Form: powdered stock concentrate
- Application method: proportionate mixer / fertiliser injector (e.g. Dosatron), not direct reservoir dosing
- Stock mix ratio: 360g per US gallon (approx. 95g/L) of water
- Injector dilution: 1:100
- Suitable media: soil, coco coir, hydroponic systems
- Companion product: Veg+Bloom DOS Part B (sold separately)
