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Brew simple compost tea safely

This guide covers making a small batch of aerobic compost tea: use mature compost, aerate with a pump, brew 12-24 hours, and apply to soil, not leaves, to avoid pathogens.

Start with mature compost

Use finished compost; avoid manure-heavy inputs to reduce pathogen risk.

Aerate continuously

Use an aquarium pump and clean tubing to keep the brew aerobic.

Brew briefly

Steep 12-24 hours, then stop to avoid anaerobic conditions.

Apply to soil

Drench soil near roots; avoid foliar spray to reduce contamination risk.

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