Hydroponics, compost and bacteria

rpondpa(5)November 30, 2006

I read on one of the posts that bacteria in the nutrient solution is not desireable and have a question about this.

I am composting using redworms and want to send the liquid runoff from the worms into my circulating hydroponics system. My idea is that the nutrient solution would feed the plants and that I could supplement the nutrient solution if needed. This 'worm tea' will be rich with both nutrients and bacteria. Is that a problem?

Insofar as feeding nutrients goes, does this have to be a precise thing? Is there room in these systems for this type of experiment or will it just kill the plants?

I am new to hydroponics. Thanks for your help.

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safwat

What you are describing is similar to Freshwater Aqua Culture and Aquaponics. It is a sophisticated, expensive operation which utilizing processes to remove solid wastes, oxidize toxic ammonia and oxyginate the water continously to prevent rotting.
If you are using this system it will be tatally organic Hydroponics.
You need to add autorophic bacteria to the growing medium so they can oxidize nitrite and ammonia to nitrate which plant can use. I would use an Ebb and Flow system with a submerging pump and a timer.
Give it a try and start with an easy plant to grow such as Lettuce or Basil. Good luck. Please let us know who it is progressing.
Safwat

    Bookmark   December 1, 2006 at 8:15PM
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willardb3

I grow in an aero system and also keep worms and have experimented with using the tea mixed with liquid nutrients.

If you use the worm/compost tea without killing the organisms in the tea before you use it, your plumbing will get plugged up.

It made no measurable difference from just nutrient use with chiles.

It makes a huge difference in soil which is where I now put my tea.

    Bookmark   December 3, 2006 at 8:59AM
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mikey10

Worm tea works fine for Hydroponic systems as a fully certifiable organic fertilizer and will not plug up your plumbing if larger liquid discharge orifices are used. Therefore, it is not suitable for aeroponics (which uses emitters to mist the roots with the hydroponic solution), but is ideal for most other forms of hydroponics. Perlite, which is very inexpensive in bulk ($8/5 cu ft from Perlite of Texas in San Antonio) has capillary active properties which are not commonly discussed, whereby liquids are "wicked" several inches through this grow medium, making it a contender for hydroponics growth medium. I have used it for decades and the only down side I have found is that of root buildup in the perlite. Depending on the design of your system, this could be a non-issue.

    Bookmark   June 21, 2012 at 1:55PM
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