Not all sprayers are created equal. That is particularly true when it comes to applying compost tea. A good compost tea sprayer has the follow features:
- The application tank must have as few corners as possible for easy cleaning.
- It should have a large opening in the top so that it is easy to add the tea and various food amendments.
- A larger access also permits easier cleaning.
- It must drain fully and have a bottom drain, also for cleaning. Round is best.
- Aeration equipment must be included if application will take longer than 4 hours. It must be sized to provide sufficient oxygen.
- Aeration equipment installed in the tank must be easy to remove and clean.
- Aeration equipment must be installed in such a way as to avoid damage by both the compost tea and the weather. It must have a sufficient power source.
- Any line filters or strainers on the spray system must permit small particles of kelp and other food sources to pass through without clogging.
- The pump must do minimal harm to the microbes.
- The pump must be able to pump small particles without damage to the pump.
- The pump must have enough return to the tank to keep all components in solution, particularly if there is no aeration on the system.
- Spray guns must permit passage of small particles so they will not clog.
- Like the unit shown above, you may want a smaller aerated concentrated tea tank so that you can make more compost tea when the first tank is empty.
- It is particularly helpful if your compost tea unit can be used in a multitude of other ways, and perhaps include a smaller mix and application tank as shown.
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