Tropical Fish Keeping banner

black algee

  1. Freshwater and Tropical Fish
    hi every one. i have just lost my first fish to white spot. i have treated my tank 40l with 5ml of white spot treatment. inside my tank i now have 4 serpea tetra 3 harlequin rosebora 2 bristle nose catfish and 2 phantom glass catfish. is there any reason why it has sudenly apeared and any...