Calcium-forward dry soluble base nutrient with 8 chelated micronutrients — built for commercial fertigation.
Front Row Ag Part A (14-0-8) is a dry water-soluble base nutrient delivering nitrate nitrogen, calcium, and a full chelated micronutrient package across all growth stages. Formulated for licensed commercial cultivators running injection systems or direct-to-reservoir programs in rockwool, coco, and hydroponic media.
Front Row Ag Part A is the calcium-and-nitrogen component of the Front Row Ag three-part dry soluble nutrient system (A / B / Bloom). The 14-0-8 NPK formula delivers the majority of its nitrogen as nitrate (13.5%), which minimizes ammoniacal uptake issues and keeps the salt index low — important in recirculating and high-frequency drip systems where ionic load accumulates quickly.
Part A carries all eight chelated micronutrients in the Front Row Ag program: iron (0.35%, chelated as EDTA and DTPA), manganese (0.10%, chelated), zinc (0.05%, chelated), copper (0.05%, chelated), boron (0.05%), and molybdenum (0.003%). Chelation via EDTA and EDDHA chemistry keeps these micronutrients plant-available across a wide pH range — critical in systems where pH drift is common. A food-grade green dye is included so operators can visually confirm full dissolution and correct dilution before delivery.
Part A is sized for commercial operations. The 25 lb bag format is the standard commercial SKU; Front Row Ag's own stock-concentrate protocols call for mixing multiple 25 lb bags per concentrate tank — for example, four 25 lb bags of Part A into 53.5 gallons for a 4-3-3 injection ratio setup. If your facility runs Dosatrons, Argus injectors, Venturi injectors, electric diaphragm injectors, or pneumatic injectors, Part A is engineered to dissolve fully into working-strength concentrate without residue.
Cultivators running inert media (rockwool, coco, perlite) benefit most from Part A's complete calcium-micronutrient delivery, since these substrates offer no native buffering. It is also compatible with direct-to-reservoir (DTR) mixing at 2.25–4.5 grams per gallon for operators not running injection infrastructure.
The Ca:Mg ratio in the Part A / Part B combined program is held at an optimal 5:1 to 3:1. This ratio is deliberate: too much magnesium relative to calcium is a common antagonism point in high-frequency irrigation schedules. By anchoring calcium delivery firmly in Part A and separating magnesium into Part B (where sulfur and phosphorus also live), Front Row Ag avoids the precipitation risk that comes with combining calcium and sulfate or phosphate sources in the same concentrated stock solution.
Nitrogen tapering is a key protocol built into the Front Row Ag system. Because Part A carries all nitrogen in the three-part system, operators can reduce Part A dosage in late flower to shift plant resources toward secondary metabolism — terpene synthesis, phytochemical production, and finishing — without altering the PK profile controlled by Part B and Bloom. This gives head growers a precise, single-variable adjustment instead of reformulating across multiple components.
Front Row Ag sources individual micronutrient compounds and chelates them in-house rather than using pre-blended micronutrient concentrates. Raw material sourcing emphasizes low heavy-metal trace levels, which matters for licensed cannabis operators operating under state-level testing and compliance frameworks.
Part A is used throughout the entire crop cycle — veg through late flower. The stock-concentrate mixing ratio recommended by Front Row Ag is 3:2:2 (Part A : Part B : Bloom) for full-cycle 'stack' programs injected at equal rates, or 4:3:3 for facilities that need higher concentrate density or tighter injection ranges. Both methods support EC validation against Front Row Ag's published validation charts, giving quality-control checkpoints at the tank before the solution ever reaches the root zone.
Part A is available through HSC as a standalone 25 lb bag (SKU: FRSFTA025) or as part of a broader Front Row Ag program order. Operators building out or scaling a feed program can request a quote for Part A alongside Part B and Bloom to cover a full cultivation cycle. HSC works with licensed cannabis and hemp operators nationally — lead time and logistics are confirmed at the time of order.
| SKU | FRSFTA025 |
| NPK | 14-0-8 |
| Total Nitrogen | 14.0% (13.5% Nitrate-N, 0.5% Ammoniacal-N) |
| Soluble Potash (K₂O) | 8.0% |
| Calcium (Ca) | 14.0% |
| Iron (Fe) | 0.35% (chelated, EDTA + DTPA) |
| Manganese (Mn) | 0.10% (chelated) |
| Boron (B) | 0.05% |
| Copper (Cu) | 0.05% (chelated) |
| Zinc (Zn) | 0.05% (chelated) |
| Molybdenum (Mo) | 0.003% |
| Derived From | Calcium Nitrate, Potassium Nitrate, Boric Acid, Copper EDTA, Iron EDTA, Iron DTPA, Manganese EDTA, Sodium Molybdate, Zinc EDTA |
Part A is a component nutrient — it is designed to work as part of the three-part Front Row Ag system (A / B / Bloom). Using Part A alone will not provide a complete nutrient profile; phosphorus, magnesium, and sulfur are delivered by Part B, and the high-PK finishing boost comes from Bloom. Best results require all three parts used according to Front Row Ag's feed chart and target EC.
Yes. Part A is engineered for injection system use. It dissolves fully into concentrate at the stock ratios specified by Front Row Ag (3:2:2 or 4:3:3 A:B:Bloom) and is compatible with Dosatrons, Argus injectors, Venturi injectors, electric diaphragm injectors, and pneumatic injectors. The food-grade green dye confirms complete dissolution at the stock tank before injection.
Store Part A stock concentrate in opaque containers at room temperature (approximately 71°F), raised off the ground, away from direct sunlight or prolonged artificial light. Use stock concentrate within 14 days of preparation. Unused dry product should be sealed (fold and clip the bag) and stored in a cool, dry location out of direct light. Humidity may change granule consistency but does not affect nutrient performance.
Usage depends on your canopy size, fertigation frequency, and target EC. As a reference point, Front Row Ag's 4-3-3 stock protocol calls for four 25 lb bags of Part A per concentrate tank batch. An accurate per-cycle estimate requires your target EC, irrigation volume, and feed chart. Contact HSC for a program-level quote covering Part A, Part B, and Bloom quantities matched to your facility's footprint.
Yes. Front Row Ag produces a Hard Water formulation of Part A that makes targeted micronutrient adjustments to balance calcium, magnesium, and other critical ion ratios for facilities using alkaline source water. If your source water EC or alkalinity is elevated, the Hard Water version may be more appropriate. Specify your water source profile when requesting a quote and HSC can confirm which formulation fits your program.
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