It sounds like your pond has high levels of ammonia
How to be sure
Your test results show high ammonia levels and your fish aren’t happy. They may appear pale or dark and shimmy, scratch, jump and flick against objects in the pond. Rapid gill movement and breathing at the water surface are also signs of your fish’s discomfort. Ammonia is dangerous for fish and needs dealing with promptly.
Step 1 – Treat your pond
- Complete a 10-25% water change and re-test after a few hours. Treat the entire pond using Ammonia Remover, you can calculate the correct dosage here.
- When at a safe level of 0.0mg, treat the pond with Bio-Start to boost the bacteria in your filter that process ammonia.
- Continue to regularly test your water.