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

Look at the NPK ratio, concentration level, and any added nutrients such as iron or kelp that can boost plant health. Check the product form—liquid versus powder—as it influences storage, odor, and ease of mixing. Also verify that the fertilizer is suitable for your plant type, whether indoor, outdoor, or for specific crops.

The listed items range from a 5‑1‑1 ratio (e.g., Alaska and Liquinox) to a 12‑2‑2 powder (B0F38LT29B) and a 2‑3‑2 hydrolysate (B0D9MLNZY3). Higher nitrogen (the first number) promotes leafy growth, while more phosphorous and potassium support root development and fruiting. Choose a ratio that matches the growth stage of your plants—leafy greens benefit from higher nitrogen, whereas fruiting plants need more phosphorus and potassium.

The 12‑2‑2 powder (B0F38LT29B) provides the most cost‑effective coverage, with 1 lb making up to 100 gal of liquid feed, ideal for big beds or vegetable plots. Its concentrated formula reduces the number of containers you need to buy and store. While liquid options like the 1‑gallon Alaska concentrate are convenient, they require more frequent purchases for the same volume.

The powder form (B0F38LT29B) naturally emits less odor than traditional liquids because the fish proteins are dried and encapsulated. Some liquid products, such as the Alaska line, are deodorized with natural wintergreen to mask the scent. To further reduce odor, dilute the fertilizer according to instructions and apply it during cooler parts of the day when volatilization is lower.

Powder emulsions are easier to store, have a longer shelf life, and typically produce less odor, making them suitable for indoor or garage storage. They also allow precise measurement for large volumes, which can be more economical for extensive gardens. However, liquids like the 1‑gallon Alaska or Liquinox are ready‑to‑mix and may be preferred for quick, small‑scale applications.

Micronutrients support chlorophyll production, enzyme function, and overall plant vigor, especially in soils that are deficient. Products such as Liquinox (iron, manganese, zinc) and EB Stone with kelp add these trace elements, giving a more balanced nutrition profile. If your soil test shows micronutrient gaps, choosing a formula with these extras can improve plant health without a separate supplement.

The 5‑1‑1 liquid from Liquinox (1‑gallon) and the 5‑1‑1 concentrate from Alaska are both safe for indoor use and labeled as non‑burning, making them ideal for houseplants. Their lower concentration and gentle nutrient release reduce the risk of over‑feeding delicate foliage. For the most odor‑free indoor option, consider the powder (12‑2‑2) and mix it with water in a small batch.

Highly concentrated products, such as the 5‑1‑1 gallon concentrates, require dilution (often 1‑2 tbsp per gallon of water) and can be applied every 2‑4 weeks, providing a steady nutrient supply. Less concentrated or pre‑diluted formulas may need more frequent applications, sometimes weekly, to maintain adequate nutrient levels. Always follow the manufacturer’s schedule, adjusting for plant type and growth stage.