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

Brown dinoflagellate slime coating reef tank rockwork

August 12, 2025 2 min read Amphidinium

How to Get Rid of Dinoflagellates in Reef Tanks

Dinoflagellates ("dinos") are one of the trickiest nuisance organisms in saltwater aquariums. They typically show up as brown, slimy coatings on sand and rock, sometimes with bubbles trapped in the slime. They look like algae, but they're actually...

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How to Get Rid of Dinoflagellates in Reef Tanks

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