Description
Quantum Bio-Nutrients 100ml — Drop-Dosed Nitrogen and Potassium Fertiliser for Nano Planted Tanks
In a nano planted tank the plants can strip nitrate to zero in a day, and the algae move in the moment they do. Quantum Bio-Nutrients 100ml (SKU: QA480100) is the drop-dosed size of Quantum’s Plant Essential Bio-Nutrients, a solution of nitrate and complexed nitrogen, potassium and sulphate, boron, bioavailable carbon sources, organic acids and natural accelerants in deionised water, formulated as a more complete supplement than a plain nitrate and potassium mix. Quantum’s premise is that plants fed well outcompete algae, and this is the nitrogen and potassium part of its NPKFe Enhancers.
The 100 mL bottle is dosed per 20 L daily at 4, 8 or 12 drops for light, moderate or heavy planting without CO2, or 8, 16 or 24 drops with CO2. A millilitre per 100 L lifts nitrate by roughly 0.2 ppm and potassium by roughly 0.15 ppm, and Quantum wants both between 10 and 30 ppm. The solution is added into high water flow without shaking and suits dosing pumps. A 40 L moderately planted low-tech tank uses 16 drops a day and gets about four months from the bottle. Phosphate comes from Bio-Molecules and iron from Bio-Trace.
Usage & Application
When to Use
- Nano planted tanks: Scapes under about 60 L dosed by the drop.
- Nitrate at zero: Tanks whose plants have used every trace of nitrogen and started to yellow.
- Potassium deficiency: Pinholes in older leaves, the classic sign of low potassium.
- Completing NPKFe: With Bio-Molecules for phosphate and Bio-Trace for iron and micronutrients.
Dosing & Administration Guide
- Test nitrate and potassium: Aim for 10 to 30 ppm of each and note whether the tank runs CO2.
- Count the drops: Per 20 L each day, 4, 8 or 12 for a low-tech tank or 8, 16 or 24 for an injected one, by planting density.
- Into high flow: No shaking; add where circulation is strongest.
- Adjust weekly: Each 1 mL per 100 L adds about 0.2 ppm nitrate and 0.15 ppm potassium.
Product Specifications & Highlights
Key Features
- More than N and K: Nitrate, complexed nitrogen, potassium, sulphate, boron, carbon sources, organic acids and accelerants.
- Carbon dioxide alternatives: Bioavailable carbon sources for low-tech tanks without injection.
- Two dosing scales: Low-tech and CO2 rates published.
- Known effect: Roughly 0.2 ppm nitrate and 0.15 ppm potassium for each 1 mL per 100 L dosed.
- Nano drop dosing: Per 20 L for small scapes.
Product Details
- Brand: Quantum (Plant Essential range)
- SKU: QA480100
- Barcode (GTIN/UPC): 0769807350328
- Product Type: Additives & Supplements > Planted Tank Fertiliser (Nitrogen & Potassium)
- Net Volume: 100 mL
- Contents: Deionised water, nitrate and complexed nitrogen, natural accelerants and boron, bioavailable carbon sources and organic acids, potassium and sulphate
- Dose Rate: 4, 8 or 12 drops per 20 L daily (no CO2) or 8, 16 or 24 drops per 20 L daily (with CO2) for light, moderate or heavy planting
- Effect: 1 mL per 100 L raises nitrate by about 0.2 ppm and potassium by about 0.15 ppm
- Target Ranges: Nitrate 10–30 ppm; potassium 10–30 ppm
- Dosing Pump: Suitable
- Target Environment: Freshwater planted aquariums, low-tech and high-tech


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