hi black angel, you gave me advice yesterday on my tank temperature. my oranda is about 3-4 inches long. he very often hides under the plants and just floats at the bottom of the tank, maby depressed? stressed? ive had the tank 4weeks and the oranda about 5 days. ive orderd nitrate and armonia test kits but they havent arrived yet, ive got tap water conditioner and i test the PH regularly and is ok (7.2). do you think i should put him in isolation? thanks for your advice, brad