Fish Sh!t Organic Soil Conditioner is a highly concentrated, living biological soil amendment designed to improve the relationship between plants, growing media, and the root-zone ecosystem.
Produced by Fish Head Farms using a closed-loop aquaponic process, Fish Sh!t contains more than 4,000 distinct microbial species and billions of active microorganisms in every dose. These beneficial microbes help break down complex organic and synthetic materials, making existing nutrients more available for plant uptake.
Unlike conventional fertilizers, Fish Sh!t does not supply significant available N-P-K or add fertilizer salts. Instead, it works biologically within the root zone to support nutrient mineralization, microbial activity, root development, soil structure, water retention, and drainage.
Fish Sh!t can be used with organic or synthetic nutrient programs and is suitable for soil, soilless media, containers, gardens, and other indoor or outdoor growing systems.
How Fish Sh!t Works
Fish Sh!t introduces a broad and diverse population of living microorganisms into the rhizosphere—the area immediately surrounding plant roots.
These microbes interact with the growing medium and help break down organic and synthetic materials into forms that are more accessible to plants. This biological activity can improve nutrient availability while supporting the development of a healthier, more balanced root-zone environment.
Because it contains living microbes, Fish Sh!t begins working when applied to the growing medium and does not require reactivation before use.
Ideal Applications
- Indoor and outdoor plants
- Fruits, vegetables, and herbs
- Flowers and ornamental plants
- Houseplants and container gardens
- Raised beds and vegetable gardens
- Lawns and landscaped areas
- Soil and soilless growing media
- Coco-based growing systems
- Greenhouse production
- Seedlings and transplants
- Organic and conventional growing programs
- Plants requiring ongoing root-zone support
General Application Directions
- Shake the bottle thoroughly before each use.
- Mix 2 teaspoons per gallon of water.
- Apply the solution during regular watering.
- Continue using as part of the plant’s normal watering and nutrient program.
Fish Sh!t is a soil conditioner and microbial supplement rather than a complete fertilizer. Continue providing the nutrients required by the crop or plant.
Fertilizer Compatibility
Fish Sh!t can be incorporated into both organic and synthetic fertilizer programs. Its microbial formula works with existing nutrient programs without contributing additional fertilizer salts.
When combining it with unfamiliar fertilizers, pesticides, or other growing inputs, conduct a small compatibility test before preparing a full mixture. Follow the directions provided by each product manufacturer.
Certifications and Sustainability
- 100% organic formula
- OMRI Listed
- USDA BioPreferred certified
- Produced through a closed-loop aquaponic system
- Compatible with organic and conventional nutrient programs
- Formulated without added fertilizer salts
Available Size
- 120 mL concentrated liquid
Why Growers Choose Fish Sh!t
Plant performance depends on more than fertilizer alone. An active root-zone ecosystem helps convert nutrients into plant-available forms while supporting root development, soil structure, and moisture management.
Fish Sh!t provides a concentrated and diverse community of living microorganisms that can be added to an existing growing program without replacing or disrupting the grower’s preferred nutrient products. This makes it a flexible biological tool for indoor gardeners, outdoor growers, and professional cultivation systems.
Build living soil. Improve nutrient availability. Support healthier roots naturally. 
