Aptus Fulvic Blast - Fulvic Acid Microelement Booster for Deficiency Prevention
Best for: growers wanting a weekly microelement top-up to head off trace element deficiencies before they show up.
Our thoughts
Think of this as cheap insurance against the trace element deficiencies that are genuinely fiddly to diagnose once they show up on the leaves. A weekly dose is low effort for the peace of mind, and the dosing rate is tiny, so a single bottle covers a lot of waterings. Not a product that will transform a grow on its own, but a sound part of a wider feeding routine.
Fulvic Blast is a complete microelement booster built around low molecular weight fulvic acid, combined with plant stimulants and a broad spread of microelements including iron, zinc, manganese, boron, copper, molybdenum and magnesium among others. Fulvic acid is directly absorbed into the plant and acts as a natural mineral chelator, which is what allows Fulvic Blast to improve the uptake of microelements that are already present in the growing medium, not just the ones it supplies itself.
Its high chelating capacity also means it can help break down accumulated nutrient salts and bind heavy metals, reducing the nutritional imbalances that come from a medium that has built up excess salts over a cycle or two.
How it compares
Fulvic and humic acid products are a well established category across most serious nutrient ranges.
- Compared with Canna's Cannazym or House and Garden's Amino Treatment, Fulvic Blast is specifically a fulvic acid and trace element product rather than an enzyme or amino acid supplement.
- Against generic fulvic acid concentrates sold as standalone soil amendments, Fulvic Blast combines the fulvic acid with a full microelement spread in one product.
- Compared with its sister product Humic Blast, Fulvic Blast is dosed weekly throughout the cycle as ongoing prevention, while Humic Blast is more of an end-of-cycle medium conditioner.
It sits comfortably alongside the trace-element boosters offered by the bigger nutrient brands, at a dosing rate that keeps a bottle going for a long time.
Usage guidance
Fulvic Blast is designed as ongoing weekly prevention rather than a one-off treatment.
Weekly dosing
Use 3ml per 10 litres of water (a 1:3333 dilution), preferably once a week throughout the growing cycle.
Suspected deficiencies
Use at uncertain or suspected microelement deficiencies as well as on a routine weekly basis.
Preparation
Shake well before use and mix thoroughly into the nutrient solution, which is fully water-soluble and leaves no residue in irrigation systems.
Technical specifications
- Format: Liquid concentrate
- Pack size: 1L
- Contains: Low molecular fulvic acid, plant stimulants, L-amino acids, chelated microelements
- Microelements included: Iron, zinc, manganese, boron, copper, molybdenum, magnesium and others
- Dosage: 3ml per 10 litres of water
- Frequency: Weekly, or at signs of deficiency
- Solubility: Fully water-soluble, no residue
Who this is for
- Growers wanting routine prevention against microelement deficiencies
- Anyone seeing early, unclear deficiency symptoms and wanting a broad-spectrum trace element top-up
- Growers running longer cycles where trace element depletion becomes more likely
- Budget growers who want a low-dose product that lasts a long time per bottle
Our take
Fulvic Blast is a sensible, low-cost weekly habit rather than a dramatic fix, and that is exactly the point. Keep it in weekly rotation and you are far less likely to be firefighting a trace element problem later in the cycle.
A solid, low-effort addition to any feeding schedule. One we sell a lot of for new growers.
