The Athena Pro Line Grow is the dry vegetative base of Athena's Pro Line. Paired with Pro Line Core, it delivers well-rounded veg nutrition for strong roots and dense foliage, then hands over to Pro Line Bloom at the switch to flower. It's a fully soluble powder you dissolve into a stock concentrate, built for rooms where consistency and cost per litre of feed both matter.
Built for the vegetative stage
Veg is where roots and leaf area are built, and it needs balanced nutrition to do it well. Pro Line Grow supplies phosphorus, potassium, magnesium, sulfur and chelated iron at 2-8-20. The bulk of the nitrogen and all of the calcium come from Pro Line Core, which is why Grow is never used on its own.
Two parts, measured by weight
For every 1 gram of Pro Line Grow, use 0.6 grams of Pro Line Core. Dissolve each into its own stock concentrate — Athena recommends 2 lb per US gallon (about 240 g per litre), and never more than 2.5 lb per gallon (about 300 g per litre) — then dose both to your target EC. Always measure by weight, not volume, and never combine the two as powders or concentrates.
At the switch to flower, replace Grow with Pro Line Bloom and keep Core running. That's the whole Pro Line: one strength, one ratio, one swap.
Full specifications
| Manufacturer | Athena (Los Angeles, USA) |
| Line | Pro Line — constant EC |
| Type | Dry, fully soluble fertiliser |
| Guaranteed analysis | 2-8-20 · 3% Mg · 8% S · 0.1% chelated Fe |
| Ingredients | Potassium phosphate, potassium nitrate, potassium sulfate, magnesium sulfate, iron DTPA |
| Stage | Vegetative — replaced by Pro Line Bloom at the flip |
| Mix ratio | 1 g Pro Line Grow : 0.6 g Pro Line Core (by weight) |
| Stock concentrate | 2 lb per US gal (≈240 g/L) recommended; 2.5 lb per US gal (≈300 g/L) maximum |
| Dosing guides | Pro Line dosage guidelines (PDF) · Pro Line liquid mix chart (PDF) |
| Sizes | 4.53 kg (10 lb) box with 5 inner pouches · 11.34 kg (25 lb) box |
| Compatibility | Stock tanks and all dosing systems, including Dosatron and Netafim |
FAQ
Can I use Pro Line Grow on its own?
No. It needs Pro Line Core for nitrogen, calcium and trace elements. Grow and Core together make the complete veg recipe.
Will I go through Grow faster than Bloom?
Usually slower. Veg is shorter than flower for most crops, so a box of Grow tends to outlast a box of Bloom.
Can I use it in DWC?
Athena publishes no DWC procedure for the Pro Line. For deep water culture, use Athena Blended Grow A & B instead.
Can I mix it with the Blended Line?
No. Blended and Pro are separate systems with separate feed charts. Pick one and stay with it.