Thanks for the reply Wilder.....
Tank is 85L and has been established for well over 3 years
Mixed comunity tank, 4 x corries, 1 x dragon goby, 6 x pleco's, 1 x ghost knife, 2 x clown loach, 3 x tetra
I'll get reults for the water tests tomorrow.....
The cysts are clear and are located near...