Plagron Fish Force

Plagron Fish Force — Organic Nitrogen-Rich Growth Booster for Soil and Coco

Best for: Growers wanting a natural veg-stage supplement to push rapid leafy growth, especially for mother plants and clones

Plagron Fish Force is a liquid fish emulsion fertiliser designed to supercharge vegetative growth in soil and coco setups. Made from actual fish waste and algae extracts, it's packed with nitrogen, amino acids, and natural vitamins that trigger rapid leafy growth and boost plant resistance to pests and disease. This is an additive, not a complete nutrient — you run it alongside your base feed to amplify what you're already doing.

How it compares

Fish Force sits in the premium organic additive category, competing primarily with seaweed extracts and other fish-based supplements.

• Higher nitrogen content (3.1%) than many seaweed alternatives — better for pure leafy growth
• Contains amino acids and vitamins that seaweed doesn't always offer
• Organic origin and soil-conditioning benefits vs synthetic nitrogen boosters
• Not suitable for hydroponics — soil and coco only
• Distinctive smell when warm means better suited to outdoor or well-ventilated spaces

Think of it as a veg-stage turbocharger. It's not your main nutrition — it's the thing that makes your main nutrition work harder.

Usage guidance

Fish Force works as a weekly additive throughout the growth phase:

Standard mixing
Add 10ml per litre of water (1:100 ratio). Use once weekly during vegetative stage. Solution remains stable for up to 48 hours after mixing.

Mother plants and clones
Treat weekly to keep plants strong and promote fast recovery. The amino acid content accelerates establishment in young plants.

Foliar spray option
Can be applied directly to leaf surfaces (both sides) for quick absorption if rapid results are needed. This speeds uptake but requires careful timing to avoid leaf burn.

Important note on smell
Cloudiness or off-odour after mixing is completely normal and harmless. This is organic breakdown happening — it doesn't affect plant health. If you're growing indoors, make sure you've got adequate ventilation when it warms up.

Storage
Keep between 0–35°C, away from direct sunlight and frost. Once mixed into your feed, use within 48 hours for best results.

Technical specifications

• NPK Ratio: 3.1% nitrogen (N), 6.6% phosphorus pentoxide (P₂O₅), 1.9% potassium oxide (K₂O)
• Form: Liquid concentrate
• Colour: Brown
• pH: 3.6
• EC: 26 mS/cm
• Density: 1.14 g/mL
• Composition: Fish waste, algae extracts, amino acids, natural vitamins
• Dosing: 10ml per litre (1:100)
• Application frequency: Once weekly during growth phase
• Available sizes: 500ml, 1 litre, 5 litre
• Suitable for: Soil and coco only — not hydroponic

Who this is for

• Growers running mother plants who want to keep them healthy and vigorous between cuttings
• Anyone nursing clones through early establishment and rooting
• Growers pushing for rapid vegetative growth before transition to bloom
• Soil and coco growers seeking natural, organic supplementation without synthetic chemistry
• Experienced growers who understand additive layering and want to optimise their feeding schedule

Best suited to soil-based and coco setups where you're already running a structured base nutrient and want to amplify growth response.

Our take

This is a genuinely effective organic growth supplement that delivers what it promises. The amino acid and vitamin content sets it apart from basic nitrogen boosters, and growers who've used it consistently report noticeably faster establishment in clones and stronger plant structure overall.

Just understand what it is — a turbocharger, not fuel. Run it alongside your base feed, respect the smell, and use it weekly through veg. Worth picking up if you're serious about mother plant maintenance or clone recovery. One we sell a lot of for growers who've moved past basics and understand layering their nutrition properly.