FloraPro Bloom B 1-5-5 Through the Flowering Cycle
Flower is when a crop's phosphorus and potassium demand outruns everything else, and the B side is where that demand gets met. It runs 1-5-5 on 5.0% available phosphate and 5.0% soluble potash, with 1.5% water-soluble magnesium and 2.0% combined sulfur riding along. The magnesium holds chlorophyll production up under hard light, and the sulfur feeds the amino acid pathways that surface later as aroma. Nitrogen stays deliberately thin at 1.0%, split 0.85% nitrate to 0.15% ammoniacal. That restraint is the whole point. Carry too much nitrogen into week six and a plant keeps building leaf instead of finishing flower. The feed chart does that steering for you. Run 14 mL/gal through weeks 1-3 and 13 mL/gal in weeks 4-6, then drop to 8 mL/gal for weeks 7-8. Week nine finishes at 4 mL/gal, so the fade arrives on schedule rather than as something you chase with a late flush.
Pairing the Two-Part Liquid Bloom Nutrient Without Crashing a Stock Tank
Bloom A and Bloom B ship as two bottles for one reason: calcium and phosphate will not share a concentrated tank. Put them together and gypsum settles on the bottom. So A carries the calcium and micronutrients while B holds everything on the phosphate and sulfate side. The two meet for the first time diluted in the irrigation line, where nothing crashes out. Rates stay matched one to one the whole way down the chart. That keeps the math honest when you are mixing at five in the morning. Most rooms give each side its own injector off a 200-gallon stock tank. Read EC at the emitter rather than the tank, since that is where a lazy injector gives itself away. Once the crop shifts generative, PK+ layers on top and neither the A nor the B rate changes.
Key Features
- 1-5-5 Flowering Analysis: 5.0% available phosphate and 5.0% soluble potash cover the bulk demand of a canopy in full flower.
- Restrained Nitrogen Load: Total nitrogen of 1.0% lets the program taper N through late bloom without a chloride-based finisher.
- Magnesium and Sulfur Built In: 1.5% water-soluble magnesium and 2.0% combined sulfur reduce the need for a separate Epsom addition.
- Tank B Chemistry: Derived from monopotassium phosphate, potassium nitrate, magnesium sulfate and magnesium nitrate, it stays stable apart from the calcium side.
- Three Production Volumes: 6, 55 and 275 gallon formats step from a single room up to a tote feeding a full fertigation loop.
Technical Specifications
| Specification | Value |
|---|---|
| N-P-K | 1-5-5 |
| Total Nitrogen (N) | 1.0% (0.15% ammoniacal, 0.85% nitrate) |
| Available Phosphate (P2O5) | 5.0% |
| Soluble Potash (K2O) | 5.0% |
| Magnesium (Mg) | 1.5% water soluble |
| Sulfur (S) | 2.0% combined |
| Derived From | Ammonium nitrate, ammonium phosphate, magnesium nitrate, magnesium sulfate, monopotassium phosphate, potassium nitrate |
| Feed Rate | 4-14 mL/gal by bloom week |
| Application | Hydroponic use only, continuous liquid feed |
| Sizes | 6 Gallon, 55 Gallon (208 L / 547 lb), 275 Gallon |
