Overview

• In Dresden’s Carolasee, staff collected about 70 dead bream as an environmental contractor took samples for independent laboratory analysis, including checks for cyanobacteria.
• Rapid spot tests from Tuesday showed normal dissolved oxygen in the Carolasee, though officials note the first deaths occurred days earlier and full lab results are still pending.
• Schlösserland had curtailed the lake fountain’s hours since April to save costs and has now expanded operating times again, citing potential albeit limited aeration benefits.
• Observers reported fewer new deaths and a receding algal presence by Wednesday, and officials said no other waters in Dresden are known to be affected.
• In Breitengüßbach, oxygen levels crashed to about 0.9% from a usual ~6%, killing hundreds to potentially thousands of fish as fire brigades and THW used Hytrans pumps and Main river water to re‑oxygenate the pond, reporting early improvement and ongoing measures.