Fins frayed or ragged
Fins look as if they are rotting away, giving eroded appearance.
Excessivly high pH, which may be accompanied by very high Hardness values. Test water with pH and GH & KH test kits to verify condition.
In tanks partial water changes can improve conditions dramatically. In ponds and enclosed bodies of water, liming can be used to lower pH and increase buffer capacity.
Dr Prescott, Shawn
Fish Disease Dolau Ltd
Dolau
Wales