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Field guides, step-by-step setups, and lessons from the lab, written by aquaculturists, for aquaculturists.

Golden-brown diatom culture in a glass vessel under bright light

August 12, 2025 1 min read culturing

How to Culture Diatoms for Marine Aquariums

Diatoms are single-celled microalgae with silica-based shells. Often seen as pests in newly cycled tanks, they actually play an essential role in marine ecosystems. Cultured intentionally, they're a valuable live feed for grazers like snails, chitons, certain copepods,...

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How to Culture Diatoms for Marine Aquariums

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How to Culture Diatoms for Marine Aquariums

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