What term describes the brief stressful period experienced by aquatic organisms while the biologic filter is being established?

What term describes the brief stressful period experienced by aquatic organisms while the biologic filter is being established?

• A. Initial period of acclimation
• B. Adjustment stage
• C. New tank syndrome
• D. Establishment disorder

Answer: (C)

The main idea is the stress period aquatic organisms experience when the biofilter is not yet established. In a new tank, beneficial bacteria that convert toxic ammonia to nitrite and then to nitrate haven’t proliferated yet. That means ammonia and nitrite can spike, plus shifts in pH and other water parameters, which briefly stress fish and invertebrates until the biological filter matures. This temporary stressful phase is commonly called new tank syndrome. It ends as the nitrifying bacteria colonies establish and the water chemistry stabilizes. To lessen it, seed the tank with established biofilter material, stock lightly, monitor ammonia, nitrite, and nitrate, perform gradual water changes, and avoid overfeeding. The other terms don’t describe this specific aquarium phenomenon.

The main idea is the stress period aquatic organisms experience when the biofilter is not yet established. In a new tank, beneficial bacteria that convert toxic ammonia to nitrite and then to nitrate haven’t proliferated yet. That means ammonia and nitrite can spike, plus shifts in pH and other water parameters, which briefly stress fish and invertebrates until the biological filter matures. This temporary stressful phase is commonly called new tank syndrome. It ends as the nitrifying bacteria colonies establish and the water chemistry stabilizes. To lessen it, seed the tank with established biofilter material, stock lightly, monitor ammonia, nitrite, and nitrate, perform gradual water changes, and avoid overfeeding. The other terms don’t describe this specific aquarium phenomenon.