Advanced Nutrients pH Perfect Bloom 1-3-4 (4 L) for Mid-Scale Hydro
The 4 L jug of pH Perfect Bloom is the mid-scale size of the Advanced Nutrients Grow–Micro–Bloom bloom-phase component. Same chemistry as the 1 L trial bottle: built-in pH buffering compounds that hold reservoir pH in the 5.5-6.3 uptake window, a 1-3-4 macro profile with magnesium and sulfur, and fully chelated iron, manganese, and zinc. The chelation is what keeps micros bioavailable across the wider pH range you actually see in real reservoirs as feeds cycle. Humic acids and surfactants improve uptake efficiency at the root zone, so you're not leaving nutrition in solution after every feed.
pH Stability and Chelated Nutrition Across Modern Hydro Systems
What 4 L gets you is the size most home growers move to once they're past the trial stage and running multiple reservoirs through bloom. It cuts restocking frequency without committing to commercial volume. The bottle slots into the Grow–Micro–Bloom three-part program as the bloom-phase macro, paired with Micro and Grow for full-cycle nutrition. It runs in aeroponics, NFT, DWC, rockwool, and coco without modification. If you've validated pH Perfect on the 1 L bottle and decided to keep it, this is the next size up. Same chemistry, more volume, fewer trips to the supply shelf.
Key Features
- pH Perfect Stabilization: Holds reservoir pH in the optimal uptake window automatically. No meter-and-correct loop between feeds.
- NPK 1-3-4: Phosphorus drives prolific flower site development. Elevated potassium increases bud weight, density, and oil through peak bloom.
- Fully Chelated Micronutrients: Iron, manganese, and zinc remain bioavailable across a wide pH range. Prevents trace lockout during bloom.
- Humic Acid and Surfactant Blend: Improves nutrient solubility, root-surface contact, and uptake efficiency at the root zone.
- 4 L for Mid-Scale Operations: Volume for multiple reservoir cycles in mid-size rooms. The next size up from the 1 L trial bottle.