Support » Toolbox » Diagnose what’s wrong » Polluted Water

Our Diagnosis

It sounds like your pond water is polluted

How to be sure

Your pond has an oily surface or the surface foams after heavy rain or around waterfalls and fountains.

Step 1 – Treat your pond

  • Test the water which may highlight pH, nitrite or ammonia change caused by pollutants – treat accordingly
  • Perform a partial water change, using Fresh Start, to help dilute the problem.
  • Consider adding an air pump to help toxic gases escape.

BE AWARE! – Treatments can sometimes reduce oxygen levels in the water. If your fish begin gasping at the surface you can add an air pump to increase oxygenation.

Step 2 – Support your fish

  • Dose with Pond Guardian Tonic Salt to help support the fish’s immune system
  • If your fish are gasping at the surface, increase oxygen levels by adding an air pump.

Blagdon water and algae treatments can safely be used with Blagdon fish medications.

Only use one fish medication at a time.

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