GK-Organics Guanokalong Powder — Organic Phosphorus Booster for Abundant Yields
Best for: Growers wanting a natural, certified organic nutrient boost without scorching risk or complicated feeding schedules
Our thoughts
This is proper organic feeding done right. Guanokalong sits at that sweet spot where you get genuine results from natural inputs, certified sustainable sourcing, and a formula that's genuinely hard to get wrong. One we recommend a lot for growers who care about quality and ethics.
Guanokalong Powder is a 100% organic nutrient amendment made from sustainably harvested bat guano collected from caves in Java and Madagascar. It's a phosphorus-forward formula (NPK 1+10+1) designed to support abundant foliage development, strengthen root structure, and deliver superior quality throughout your growing cycle. Unlike synthetic phosphorus boosters, Guanokalong works as a slow-release organic input—no risk of nutrient burn, no guesswork, no expiration date when stored properly.
How it compares
Guanokalong sits in the premium organic segment of guano-based fertilisers.
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vs seabird guano (0-11-0): Bat guano offers more balanced nutrition with nitrogen present; seabird is phosphorus-only and better for late-stage flowering specialists
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vs high-nitrogen bat guano (5-1-1, 7-3-1): Guanokalong's 1+10+1 is phosphorus-dominant, making it ideal for mid-cycle through finish without needing separate potassium
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vs synthetic phosphorus boosters: Fully organic, certified sustainable, and works with soil biology rather than forcing nutrient availability
In simple terms: you're getting certified organic inputs from suppliers who actually care about environmental impact, backed by Control Union certification and a formula that's genuinely consistent batch to batch.
Usage guidance
Guanokalong works across different growing systems and application methods:
Indoor soil growing (the standard approach)
Mix 100 grams of Guanokalong Powder per 15-litre pot into your soil at the start, or blend 1kg with 100–200 litres of compost before filling containers. This front-loads your phosphorus for the full cycle. Alternatively, top-dress 50g per pot in week 1 and rake gently into the surface.
Outdoor growing
Use 1kg per 5–10 square metres, worked into the soil before planting. Top-dress additional powder mid-cycle if needed and rake thoroughly into the soil.
As a nutrient tea or weekly feed additive
Mix 1kg with 10 litres of water and stir once weekly for a month, then apply weekly from week 1 through finish as a feed additive. Some growers reserve this for the final week to intensify flavour quality.
With coco coir
Works cleanly with pure coco when used in smart pots or similar—prevents powder migration. Apply as a top-dress or mix into the medium at the start.
Complementary feeding
Because Guanokalong is phosphorus-dominant, additional nitrogen may be needed during vegetative growth (most complete soils contain sufficient nitrogen, but monitor leaf colour). During flowering, it stands alone well. Some growers add potassium separately in later weeks for yield density.
Technical specifications
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NPK Formula: 1 + 10 + 1 (minimum guaranteed analysis; values may vary slightly per batch)
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Source: 100% bat guano from rainforest caves (Java and Madagascar)
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Form: Powder (immediately effective from week 1)
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Composition: Rich in macro-elements, micro-elements, and natural enzymes; phosphorus is particularly abundant
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Certification: Control Union certified organic; ecologically certified sustainable suppliers
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Odour: None
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Shelf life: No expiration date when stored in a dark, dry location
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Application rate (soil): 100g per 15-litre pot, or 1kg per 100–200 litres of compost
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Application rate (outdoor): 1kg per 5–10 square metres
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Burn risk: None—safe to use at stated quantities throughout all growth stages
Who this is for
- Organic and sustainability-focused growers who want certified inputs
- Soil-based growers looking for a reliable phosphorus boost without synthetic products
- Quality-focused cultivators who value taste and yield density equally
- Coco growers wanting an organic amendment option
- Anyone running multiple pots where consistent, safe feeding matters
- Commercial growers working to organic protocols
Particularly well suited to setups where ethical sourcing and proven results matter equally.
Our take
This is genuinely solid organic feeding. The phosphorus profile supports excellent foliage development and yield without requiring a complicated feed schedule. The fact that it's sustainably sourced, certified, and genuinely hard to burn your plants with makes it a proper standout in a crowded market.
If you're building an organic setup or just want to add a trusted phosphorus boost to your existing feed, worth picking up while clearance stock lasts. Does exactly what it should, week in and week out.
