Comparison: Best Superthrive Fish Emulsion (Updated | Dec 1st)

For general vegetable and flower beds a balanced 5-1-1 ratio works well, while a lighter 2-3-1 or 2-3-2 ratio is better for frequent, light feeding of leafy greens. The Alaska Fish Emulsion, Fertilome, Liquinox, and Fish Emulsion 16 oz all provide a 5-1-1 ratio, whereas the 1‑gallon organic fish emulsion and the Safergro Aqua Power use a 2‑3‑1 ratio, and the Hydrolysate offers 2‑3‑2. Choose the ratio that matches your plant’s nutrient needs and how often you plan to apply.

Liquid fish emulsions typically retain a strong fishy smell because they are made from fresh hydrolyzed fish, as seen with the 1‑gallon organic fish emulsion and Liquinox. Powdered options like the 12‑2‑2 Fish Emulsion Powder are formulated to reduce odor while still delivering the same nutrients, making them a better choice for indoor or enclosed spaces. The odor does not impact nutrient content, but a milder smell can improve the user experience.

Higher‑concentration concentrates, such as the Alaska Fish Emulsion (1 gal) and Safergro Aqua Power (1 qt), require less product per gallon of water, stretching each purchase farther. The 12‑2‑2 powder is ultra‑concentrated, with 1 lb making up to 100 gal of feed, offering exceptional cost efficiency for large plots. Compare the listed dilution instructions to estimate how many gallons of feed each container will produce and choose the most economical option for your garden size.

The Safergro Aqua Power and the 12‑2‑2 Fish Emulsion Powder are OMRI‑certified organic, meaning they meet strict standards for organic farming and contain no prohibited synthetic additives. Certified organic products are ideal for gardeners seeking to maintain organic certification for their produce or who prefer environmentally friendly inputs. Non‑certified liquids still provide natural nutrients but may not qualify for organic labeling.

Several formulations add trace elements: Liquinox lists iron, manganese, and zinc, while Safergro Aqua Power includes 20 amino acids, 13 vitamins, and 8 minerals. These micronutrients support chlorophyll formation, enzyme function, and overall plant vigor, especially in soils lacking trace elements. Selecting a product with added micronutrients can reduce the need for separate supplements.

Yes, most of the listed products are safe for indoor use, provided you follow the recommended dilution rates to avoid over‑fertilizing. Powdered or low‑odor liquids, such as the 12‑2‑2 powder or the 2‑3‑1 organic emulsion, are particularly suitable for indoor spaces because they emit less odor. Outdoor applications benefit from the higher‑concentration liquids, which can be applied to lawns, trees, and larger beds.

Liquid emulsions like Alaska Fish Emulsion, Fertilome, and Liquinox are mixed with water and can be applied with a watering can, sprayer, or drip system. Powdered forms such as the 12‑2‑2 Fish Emulsion Powder are dissolved in water before use, offering precise measurement and easy storage. Some products, like the 8 oz fish emulsion, come with ready‑to‑use bottles for quick foliar sprays.

For most hobby gardeners, the 1‑gallon organic fish emulsion (2‑3‑1 NPK) provides a good balance of nutrient density, organic certification, and price per use, especially when mixed at the recommended 1‑2 tbsp per gallon of water. If odor is a concern, the 12‑2‑2 powder offers low‑smell, high‑concentration feeding at a comparable cost per gallon of feed. Compare the container size, NPK ratio, and included micronutrients to determine the best fit for your garden’s size and planting goals.