Balanced liquid P&K supplement for mid-to-late flower — no nitrogen, no overcorrection.
Athena Blended PK (0-4-5) is a low-nitrogen, liquid phosphorus and potassium booster designed to run alongside the Athena Blended Bloom A+B base during weeks 3 through finish. At 55 gallons, it's sized for multi-light commercial rooms that need consistent flowering support at scale without dry salts or manual weighing.
Athena Blended PK is a water-soluble liquid bloom supplement with an NPK of 0-4-5. The formulation is deliberately low on nitrogen so growers can push additional phosphorus and potassium into the flowering phase without adding a nitrogen load that plants don't need mid-to-late bloom. It's a single-bottle add-on that slots directly into the Athena Blended Line feed schedule — not a standalone base nutrient.
The 55-gallon format (SKU: LQB-PK-55G) is the commercial-scale option for operations running large reservoirs or automated dosing systems. It eliminates the constant rotation of smaller jugs and is compatible with pump-and-dose injection setups used in production facilities.
Licensed cannabis and hemp cultivators already running the Athena Blended Line who want a dialed-in PK supplement that follows the same program logic — EC-based dosing, a published week-by-week feed schedule, and a liquid-only workflow with no dry salts to dissolve or weigh. If your facility runs Bloom A+B as the base, PK is the designed complement for the back half of the cycle.
It's also a fit for operators who have had problems with other PK boosters knocking out calcium and magnesium availability. Athena's ratio is moderate by design — 4% available phosphate, 5% soluble potash — which keeps secondary nutrient availability intact rather than chasing peaks that create lockout downstream.
The guaranteed analysis on the label reads: 4% available phosphate (P₂O₅), 5% soluble potash (K₂O), 0.96% water-soluble magnesium (Mg), and 1.5% combined sulfur (S). Zero nitrogen. The formula is sediment-free and compatible with all dosing and irrigation systems, including fine dripper heads — relevant for operations running Dosatron or precision drip emitters where particulates cause blockages.
Application rate runs 3–10 mL per gallon of water, introduced starting week 3 of the flowering phase and carried through based on the Athena Blended feed schedule. EC should be monitored regularly and adjusted per crop and growth stage. pH should be dialed in after all nutrients and additives are mixed. Store sealed in original packaging between 45°F and 85°F.
In a production setting, consistency matters more than complexity. The Athena Blended Line is built around that premise: two-part liquid bases for veg and flower, with a small set of defined supplements — PK, CaMg, Stack, Balance, Cleanse — each covering a specific gap. PK's role in that system is targeted: add phosphorus and potassium demand support in mid-to-late flower without introducing another variable to manage.
At the 55-gallon drum scale, a facility can run the full back half of multiple flowering rooms off a single container. The liquid format integrates cleanly into automated fertigation systems or bulk mixing stations without the dissolution step required by dry concentrates. For operations that have already standardized on the Athena Blended program, ordering PK in drum quantity through HSC reduces per-unit cost and simplifies procurement.
| SKU | LQB-PK-55G |
| Brand | Athena |
| Product Line | Blended Line |
| NPK | 0-4-5 |
| Available Phosphate (P₂O₅) | 4% |
| Soluble Potash (K₂O) | 5% |
| Water-Soluble Magnesium (Mg) | 0.96% |
| Combined Sulfur (S) | 1.5% |
| Container Size | 55 Gallons |
| Application Rate | 3–10 mL per gallon, starting week 3 of flower |
| Storage Temperature | 45°F – 85°F, sealed in original packaging |
| Formula Type | Liquid, sediment-free |
It's a supplement, not a base. Athena PK is designed to run alongside the Blended Bloom A+B two-part base during the mid-to-late flowering phase. It adds phosphorus and potassium on top of your base feed — it does not replace it.
Athena's published rate is to introduce PK starting at week 3 of the flowering phase. Exact timing and taper-off point are outlined in the Athena Blended Line feed schedule, which covers a 13-week program across propagation, veg, flower, and finish stages.
Yes. The formula is sediment-free and compatible with all irrigation and dosing systems, including fine-orifice dripper heads and mechanical dosing equipment. It's a liquid concentrate — no pre-dissolution required.
The moderate ratio is intentional. Many PK boosters use aggressive phosphate and potash levels that can reduce calcium and magnesium availability, creating secondary deficiencies. Athena's formulation keeps elemental bioavailability balanced so you're supporting flower production without creating lockout problems on Ca and Mg.
Athena PK is formulated and scheduled as part of the Athena Blended Line. While it's chemically a liquid PK supplement, Athena publishes dosing guidance within the context of its own base nutrients and EC targets. If you're running a different base, you'd need to calculate EC contribution independently and confirm compatibility with your existing program — something to test against your current feed schedule before committing at drum scale.
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