What Hyposalinity Kills
The Effects of Osmotic Shock Therapy (O.S.T.) on Marine Life

e Osmotic Shock Therapy (O.S.T. or hyposalinity) is one of the most effective, non-chemical ways to rid saltwater fish and aquariums of parasitic ich diseases, as well as can be used to eliminate a number of other pests* that often plague saltwater systems. Unfortunately the downside of using this method to kill bad things you don't want is that it will kill other desirable things as well. This includes, but may not be limited to following animals:

Hawaiian Black Brittle Starfish Photo by Debbie Hauter

• Aiptaisia Anemones*
• Black Spot Disease* (Black Ich/Tang Disease)
• Brooklynellosis* (Saltwater Ich/Clownfish Disease)
• Corals
• Cryptocaryon* (Saltwater Ich/White Spot Disease)
• Non-Shelled Snails/Nudibranchs/Sea Slugs
• Oodinium* (Saltwater Ich/Velvet, Rust, Coral Fish Disease)
• Sea Anemones
• Sea Cucumbers
• Sea Urchins
• Soft Shelled Crustaceans
• Starfishes
• Tube Worms (Feather Dusters)

• Algae
• Bristleworms*
• Eels
• Fish
• Flat Worms*
• Hard Shelled Crustaceans
• Hermit Crabs
• Shelled Snails
• True Crabs

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