Comparison: Best Alaska Fish Fertilizer Gallon (Updated | Dec 1st)

Alaska fish fertilizers typically use a 5-1-1 N-P-K ratio, which provides a balanced source of nitrogen for leafy growth, phosphorus for root development, and potassium for overall health. Look for additional claims such as 11 vitamins, enzymes, or micro‑nutrients that can boost soil biology. OMRI certification is also a good indicator of organic compliance.

A 1‑gallon (128 oz) concentrate, like the Alaska Fish Emulsion 5‑1‑1, offers the best value per ounce and is ideal for larger gardens or frequent applications. The 115‑oz and 32‑oz options are smaller, making them convenient for hobbyists or indoor growers, but they cost more per ounce. Choose the size that matches the scale of your planting area and your storage space.

The deodorized wintergreen version is formulated to reduce the typical fishy odor, which many indoor gardeners prefer. Nutritionally, both formulas share the same 5‑1‑1 ratio, so plant performance should be similar. If scent is a concern, especially for indoor use, the wintergreen option may be worth the slight price premium.

OMRI (Organic Materials Review Institute) listing certifies that a product meets the standards for organic farming, meaning it contains no prohibited synthetic chemicals. This is important for growers who sell certified organic produce or who want to maintain an organic garden. Several Alaska fish fertilizers, such as the OMRI‑listed 5‑1‑1 concentrate, carry this certification.

Concentrates (e.g., 1‑gallon 5‑1‑1) require dilution with water, giving you flexibility to adjust strength for different plant stages. Ready‑to‑use liquids are pre‑diluted, saving time but often cost more per application. If you have a watering system or enjoy customizing feed rates, a concentrate provides better value.

Alaska’s 5‑1‑1 formulas deliver higher nitrogen, which promotes rapid leafy growth, while Neptune’s Harvest 2‑4‑1 has more phosphorus for stronger root and fruit development. Both are organic and derived from fish, but Alaska emphasizes a balanced N‑P‑K ratio and odor control. Choose Alaska for general foliage health, or Neptune’s Harvest if you need extra phosphorus for fruiting crops.

The 2‑pack quart (total 2 quarts) is convenient for small spaces and trial use, but on a per‑ounce basis it is usually pricier than the gallon. If you plan to fertilize a larger garden or want to stock up, the gallon offers the best cost efficiency. However, the quart packs are handy for indoor growers who need limited quantities.

Fish fertilizers contain amino acids, enzymes, and beneficial microbes that improve soil structure and increase nutrient uptake. They can boost earthworm activity, enhance microbial diversity, and reduce the need for synthetic pesticides. These secondary benefits often translate into healthier, more resilient plants over time.