Commonly known as: Grobest Organic Fertilizer
Product name: Grobest FH100 – Liquid Fish Hydrolysate
Grobest FH100 is a high-quality liquid fish hydrolysate fertiliser, designed to support both plant growth and soil biology. Unlike fish emulsions that are heat-processed, Grobest FH100 is enzymatically hydrolysed at low temperatures. This preserves naturally occurring amino acids, fats, proteins, and micronutrients that plants and beneficial soil microbes actively use.
This fertiliser supplies organic nitrogen and phosphorus, supporting leafy growth, root development, and overall plant vigour. At the same time, the amino acid profile feeds beneficial microorganisms, improving nutrient availability and long-term soil health. That makes it especially useful for indoor plants, container gardening, and living soil systems.
Grobest FH100 works well across a wide range of plants — from houseplants and ferns to vegetables, fruiting crops, and ornamentals. Because it is organic and biologically active, it is gentle on roots while still delivering noticeable results when used consistently.
Grobest Organic Fertlizer Care & Usage Guide
How do I use Grobest FH100 for indoor plants?
Dilute 1:100 to 1:200 (5–10 ml per litre of water). Apply as a soil drench every 2–3 weeks during active growth. Water evenly and avoid over-saturating already wet soil.
Can I use it as a foliar spray?
Yes. Grobest FH100 is suitable for foliar application when diluted correctly. Use a fine mist and spray early in the morning or late afternoon. Foliar feeding allows amino acids and trace elements to be absorbed directly through the leaves.
What are the benefits of fish hydrolysate fertiliser?
Fish hydrolysate provides:
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Organic nitrogen for steady leaf growth
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Phosphorus for roots and energy transfer
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Amino acids that improve nutrient uptake
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Proteins and fats that feed soil microbes
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Trace elements for balanced plant health
Because nutrients are bound organically, plants absorb them efficiently with minimal risk of burn.
Can I use this with other fertilisers?
Yes. Grobest FH100 pairs well with:
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Controlled Release Fertiliser for baseline nutrition
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Mineral supplements like Magnesium Sulphate
It works particularly well in organic or semi-organic feeding programmes.
Is it safe for sensitive plants?
Yes, when diluted correctly. Fish hydrolysate is generally gentler than synthetic fertilisers and is suitable for ferns, aroids, and most houseplants.
When should I not use it?
Avoid feeding during plant dormancy or cold winter periods when growth has slowed significantly. Resume feeding as temperatures and light levels increase.
Why Grobest FH100 is Different
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Enzymatically hydrolysed, not heat-processed
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Retains a complete amino acid profile
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Supplies organic N and P without harsh salts
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Feeds both plants and soil biology
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Suitable for indoor and outdoor use
Its naturally acidic pH (±3.8) helps stabilise nutrients and supports availability in the root zone when diluted.
FAQ’s
Q: Will this fertiliser smell like fish?
Yes — lightly. It smells more like Bovrill. It’s normal for true fish hydrolysate and fades quickly after watering.
Q: Can I use this for vegetables and herbs?
Absolutely. It’s excellent for leafy greens, fruiting plants, and herbs.
Q: Is it organic?
Yes. Grobest FH100 is a 100% organic fish hydrolysate.
Q: Can I use it in pots indoors?
Yes — just stick to the recommended dilution and don’t overwater.
What makes Grobest Organic fertilizer unique?
– It is 100% organic (Ecocert Certification)
– Highest nutrient value per volume compared to any other organic fertilizer (more than 60 minerals and 10 amino acids)
– Highest C: N ratio of any fertilizer on the market (Ratio 1:7)
– Lowest carbon footprint of all fertilizers (even lower than making compost)
– Suitable for all types of plants from grass to shrubs to trees
– Can be applied as a soil drench or a foliar spray
– Feeds both the plant and microbiome at the same time
– 100% absorbable and does not leach from the soil
– Cost-effective: 1 litre dilutes 150 litres of fertilizer for home garden use.
– Good for the environment, the birds and the bees Love Grobest FH100, because it is natural.
COMPOSITIONS
(N) Organic 2.18%
(NH3) Ammonia 0.18%
(NO3-) Nitrate >0.01%
(P2SO5) Available P2SO5 2.82%
(PO43-) Orthoposphate 1.16%
(K2O) Soluble 0.28%
(Ca) Calcium 0.07%
(Mg) Magnesium 0.09%
(S) Sulphur 0.10%
(Na) Sodium 2520 ppm
(Zn) Zinc 20.19 mg/ℓ
(B) Boron 1.49 mg/ℓ
(Cu) Copper 1.45 mg/ℓ
(Mo) Molybdenum 0.24 mg/ℓ
(Mn) Manganese 2.17 mg/ℓ
(Cd) Cadmuim 0.298 mg/kg
(Se) Selenium 0.033 mg/kg
(Fe) Iron 84.41 mg/kg
(Co) Cobalt 0.02 mg/ℓ
EC Fertilizer 15.2 dS/m
pH 3.8
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