Athena Nutrients Blended Line Grow A&B — Professional 2-Part Hydroponic Nutrients for Vegetative Growth
Best for: Growers running hydroponic systems, automated dosing setups, or anyone wanting professional-grade nutrients without the complexity of 3-part formulas
Our thoughts
This is a properly balanced 2-part nutrient system that does away with the faff. Athena's built this for commercial growers and serious hobbyists — it's sediment-free, works with any system, and the dosing is flexible enough to dial in for seedlings or mature plants. One we recommend a lot because it's genuinely cost-effective without cutting corners.
Athena Grow A&B is a professional-grade 2-part liquid nutrient system formulated specifically for the vegetative stage and non-flowering plants. It's a mineral-only blend with no sediment, designed to work seamlessly with recirculating hydroponic systems, automated dosing equipment like Dosatron and Netaflex, and any growing medium you're using — coco, rockwool, soil, or soilless. Equal parts A and B mix to give you a carefully balanced nutrient profile that supports photosynthesis, healthy respiration, robust root development, and strong structural growth. Simple. Clean. No guessing.
How it compares
Athena Blended Line sits between budget powders and premium multi-part systems.
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vs. 3-part competitors: Fewer bottles to manage, same precision, less mixing complexity
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vs. 1-part solutions: Broader micronutrient spectrum, more flexibility to adjust feeding strength
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vs. other 2-parts: 100% soluble with zero sediment — won't clog fine dripper lines or dosing pumps
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Cost per gallon: Roughly 8 cents when mixed at standard strength — competitive against household names but using a fraction of their dosage rates
The real win is concentration. You're dosing at 2–5 mL per gallon for most crops, not 15–20 mL. That adds up fast across multiple systems.
Usage guidance
For hand-watering or standard feeding
Mix 2–5 mL of Grow A and 2–5 mL of Grow B per gallon of water. Equal parts, always. Monitor your EC (electrical conductivity) and adjust up or down based on your crop stage and plant response. Seedlings want lower strength (around 2 mL/gal); mature vegetative plants can handle 4–5 mL/gal.
For automated dosing systems (Dosatron, Netaflex, peristaltic pumps)
This is where Athena excels. The 100% mineral formula won't clog venturis, dosers, or fine irrigation lines. Program equal ratios of A and B, and it'll dispense clean every time. No sediment, no maintenance headaches.
For recirculating hydroponic systems
Athena was built for this. Use equal parts A&B, monitor system EC, and adjust feeding strength daily if needed. Change your reservoir on a schedule that suits your system size — weekly for smaller DWC, fortnightly for larger ebb-and-flow.
Before you feed
Always mix A and B into water separately first — never combine them undiluted. Once mixed, adjust pH to 5.8–6.2 depending on your medium. This is a mineral formula with no pH buffering, so you're in control.
Flexibility matters
Unlike fixed-ratio nutrients, Athena lets you dial in strength from light (2 mL/gal for seedlings) through heavy (15 mL/gal for dense vegetative growth). That flexibility is the whole point — you're not locked into "one size fits all."
Technical specifications
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Format: 2-part liquid nutrient system (Grow A, Grow B)
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Guaranteed Analysis (A): 4-0-1 (Nitrogen–Phosphate–Potassium)
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Guaranteed Analysis (B): 1-3-5
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Key active ingredients (B part): Monopotassium Phosphate, Potassium Nitrate, Copper EDTA, Magnesium Sulfate, Monoammonium Phosphate
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Solubility: 100% soluble — no sediment, no cloudiness
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Recommended dosage: 2–5 mL per gallon during vegetative stage (adjustable up to 15 mL/gal for mature plants)
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Micronutrient profile: Chelated minerals for availability across all pH ranges
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System compatibility: All hydroponic methods, all growing media (coco, rockwool, soil, soilless), all irrigation systems including automated dosing
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Mixing requirement: Always use equal parts A and B
Who this is for
- Commercial growers running recirculating hydroponic systems at scale
- Serious hobbyists with multiple grow stations or rooms
- Anyone running automated dosing equipment and wanting zero clogging risk
- Growers who want professional-grade results without 3-part complexity
- Those prioritising system reliability and consistent feeding over premium branding
- Experienced growers who appreciate flexibility in nutrient strength and EC control
Our take
Athena Grow A&B is proper professional kit at a price that actually makes sense. It's built for automation and precision, works across any system, and the concentration means you're not paying for water. No sediment, no clogging, no faffing with complex ratios — just balanced nutrient chemistry that does the job.
If you're scaling up, running multiple systems, or just want something that'll work cleanly with your Dosatron without drama, worth picking up while clearance stock lasts. Does exactly what it should, day in, day out.
