It begins with fish poo and pee, both of which contain lots of ammonia. Worms that live in rooting substrates break the solids down and then bacteria convert the ammonia into nitrate, which acts as a fertiliser. The plants absorb the nitrate and effectively filter the water for the fish.

Does fish poop help aquarium plants grow?

Here’s how it works: Fish are typically raised in indoor tanks, troughs or outdoor ponds, where they produce excrement. The water with the waste from the tank flows to a hydroponics tray where plants grow in the water without soil. The waste is toxic to the fish but is a rich fertilizer for the plants.

Do plants eat fish waste?

Not only is it possible its a sustainable method of farming! Hydroponics is farming without soil, and aquaponics is hydroponics using fish. On a low level, the fish waste feeds the plants and the plants clean the water for the fish.

Is fish good for growing plants?

Fish makes a very good natural fertilizer for nitrogen and trace minerals. In fact, it works so well that many Native American horticulturalists buried a fish at the base of each crop plant.

What can you use fish poop for?

This farming method uses fish poop to fertilize crops, feed urban communities, and protect the planet. At Oko Farms, produce is grown through a process called aquaponics, where freshwater fish are raised in one tank and their waste is transported to another that contains crops, fertilizing them.

Is fish pond waste good for plants?

Due to the rich nutrient profile of pond water, it can serve as organic fertilizer for plants. Plant fertilizer will typically contain nitrogen and phosphorus, which are vital for proper plant growth.

Is dirty fish tank water good for plants?

Using Aquarium Water to Irrigate Plants



“Dirty” fish tank water isn’t healthy for fish, but it’s rich in beneficial bacteria, as well as potassium, phosphorus, nitrogen, and trace nutrients that will promote lush, healthy plants. These are some of the same nutrients you’ll find in many commercial fertilizers.

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