Age Old Fish & Seaweed (3 – 3 – 2)

Age Old Fish & Seaweed (3-3-2) is a liquid organic nutrient derived from fish hydrolysate and seaweed. It delivers a balanced 3-3-2 NPK ratio alongside naturally occurring trace elements and growth cofactors from kelp. The formula works as both a soil drench and a foliar feed, making it a flexible option for growers running indoor hydroponic or soil-based systems alongside outdoor gardens, trees, and shrubs.

Age Old Fish & Seaweed Specifications

Specification data compiled from the canonical product listing and supplier documentation for SKU AO40600.

Specification	Value
Brand	Age Old
SKU	AO40600
NPK Analysis	3-3-2
Formulation Type	Liquid concentrate
Nutrient Sources	Fish hydrolysate, seaweed extract
Application Methods	Soil drench, foliar feed
Shipping Weight	~58 lb
Plant Types	Indoor and outdoor plants, trees, shrubs

Why Choose Age Old Fish & Seaweed

Fish & Seaweed is built around two of the most established organic nutrient inputs in horticulture: fish hydrolysate and kelp-derived seaweed extract. The 3-3-2 NPK ratio is intentionally moderate and balanced — it provides nitrogen for vegetative structure, phosphorus for root and flower development, and potassium for overall plant vigor without pushing aggressive growth that can lead to soft tissue or excessive salt accumulation in the root zone.

Because it is derived from whole fish hydrolysate rather than fish meal or fish emulsion, the nutrient profile includes naturally occurring amino acids, enzymes, and fatty acids that support microbial life in living soil and coco media. The seaweed component adds naturally occurring cytokinins and auxins — plant growth hormones found in kelp — which are associated with improved fruit set and better stress tolerance in the flowering and ripening phases.

The liquid concentrate format is practical for growers managing both soil-grown and container crops in the same facility. It can be added directly to irrigation water for a soil drench or diluted into a pump sprayer for foliar application during the vegetative stage. This dual-use flexibility means a single product can support multiple feeding strategies across a grow cycle without requiring separate organic base nutrients for soil and foliar applications.

• Balanced 3-3-2 NPK from fish hydrolysate and seaweed — supports steady growth without overloading any single macronutrient
• Naturally occurring amino acids and growth cofactors from whole-fish processing support soil biology and plant uptake
• Seaweed-derived cytokinins and auxins are associated with improved flowering response and fruit development
• Dual-application format: use as a soil drench through irrigation or as a diluted foliar spray
• Suitable for a wide range of plant types — indoor crops, outdoor vegetables, ornamental trees, and shrubs

Best Uses for Age Old Fish & Seaweed

Fish & Seaweed fits best in programs where growers want an organic base or supplement that works across multiple growth stages without swapping products. The moderate NPK and dual nutrient sources make it broadly useful from transplant through early bloom.

• Soil and coco media: Apply as a root-zone drench to deliver organic nitrogen and encourage beneficial microbial populations. The amino acids and trace elements from the fish fraction are broken down by soil microbes and made available to roots progressively, reducing the risk of nutrient burn compared to synthetic concentrates.
• Foliar feeding during vegetative stage: Dilute and apply to leaf surfaces early in the day or under lower-intensity lighting. Foliar application of the seaweed fraction is most effective during rapid vegetative growth when cytokinins support new growth points and branching.
• Transition from vegetative to flowering: The 3-3-2 ratio holds enough phosphorus to support early root development and initial flower sites without the high phosphorus load of dedicated bloom nutrients. It can be run alongside or preceding a bloom-focused formula.
• Outdoor trees and shrubs: Use as a seasonal soil drench for established ornamental and fruit-bearing trees. The organic nutrient sources release more slowly outdoors, providing extended feeding without requiring weekly applications.
• Supplementing other organic nutrient programs: Fish & Seaweed works alongside other organic inputs. For programs already using dry amendments like Down to Earth Crab Meal, it adds soluble organic nitrogen and seaweed growth factors that dry amendments alone do not provide.
• No-till and living soil: In no-till containers, this formula supports the soil food web rather than bypassing it. The fish hydrolysate feeds beneficial bacteria and fungi that in turn make nutrients available to plant roots.

Usage Guidelines

Age Old Fish & Seaweed is a liquid concentrate intended for dilution before use. Because this is a lean-tier listing compiled from distributor data, Age Old’s published dose rate per gallon is not available in the canonical row. Refer to the label or the Age Old website for current mixing ratios by crop type and growth stage. General guidance for organic fish-based liquid nutrients of this NPK type follows.

Soil drench: Dilute concentrate in pH-adjusted water (target 6.0–6.5 for soil media) and apply at the base of the plant. For container plants, apply until runoff is visible. Frequency is typically once per week to once every two weeks depending on plant size, container volume, and ambient temperature — warmer conditions accelerate microbial breakdown and may support more frequent light applications.

Foliar feed: Dilute to a lower concentration than the soil drench rate to avoid burning foliage — typically half the drench rate or less. Apply early in the morning or during lights-off transitions so the solution can absorb before stomata close in heat. Avoid foliar feeding during flowering to prevent mold risk in dense canopy environments.

Compatibility with other nutrients: Fish hydrolysate is compatible with most organic and many synthetic nutrient programs. When combining with chelated mineral nutrients, add Fish & Seaweed last and mix thoroughly. If you are running a structured organic program that includes a dedicated growth booster, Fish & Seaweed can serve as the organic base layer while products like Earth Juice Hi-Brix Molasses supply additional carbohydrate-based microbial fuel alongside it.

Storage: Liquid fish-based concentrates should be stored in a cool location, away from direct sunlight and heat. Shake or stir before each use as natural settling may occur. Once opened, use within the season or follow Age Old’s label guidance for shelf life after opening.

Sources & Further Reading