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How to Make Fish Emulsion Fertilizer

February 20, 2011

By blusher, eHow Member

Fish emulsion fertilizer is an amazing fertilizer that you can easily make at home. Fish fertilizer is one of the most powerful organic fertilizers that you can feed your plants. It is made from the remains of fish. It is a liquid fertilizer made from emulsifying fish byproducts and is considered an organic mixture since it is naturally derived.

Here’s how to make fish emulsion fertilizer at home:


Things You’ll Need:

  • 5 gallon bucket with lid
  • Blender
  • Fish
  • Molasses
  • Epsom salt
  • Dried leaves and grass
  • Water
  • 2 weeks

Buy a 5 gallon bucket with a lid. You can use a larger container if you want but you will need to adjust the proportions.

Add fresh fish parts to a blender with warm water and emulsify. Avoid using canned fish for the fertilizer since these tend to contain extra preservatives.

Fill the bottom of the fish fertilizer bucket with dried leaves, straw, dried grass, newspaper, and/or sawdust. These will help to control the smell and absorb extra nitrogen from the fish.

Add molasses (unsulfured or dry) to the fertilizer bucket as well. This will help to control the fish emulsion smell and also build up the microbes in order to speed up the process of decomposition.

Add fresh or dried seaweed to the container (optional).

Add 1-2 tablespoons of Epsom salt. This will add needed magnesium and sulfur.

Add the lid and stir the fish emulsion 1-2 times per day and let the concoction sit for at least 2 weeks.

Dilute the fish emulsion fertilizer to a 1:5 ratio and add to your plants.

2 Comments leave one →
  1. Peter Nechi permalink
    May 7, 2011 2:27 pm

    Thanks for your simple but clear way of making fish emulsion fertilizer. We are fish farmers in Africa-Nigeria to be precise.

    What is the chemial analysis/composition of fish emulsion fertilizer.

    Please we want to know if fish emulsion fertilizer can be applied in Catfish feed formulation.

  2. Benhard-Indonesia permalink
    June 25, 2011 1:00 pm

    I agreed with you that fish provide ” powerful organic fertlizer ” because I have been using waste fish for fertilizer since 1950 for my vegetable and orchid plants and have given me amazing results. Now 2011 I still use fish as fertilizer for my chilli, tomato, red onion and garlic plants in my garden.

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