My black moor is staying in one corner of the tank with his fins clamped and hes not moving much. I'll give test results tonite.

Can you do test results now? If not then it would be best to do a water change anyway, change about 50% of the water and check the temperature is about the same before adding to the tank.

Hi,sorry to hear that your Moor is having problems.Along with the test results,if you could try and answer the questions up above,that will give us a more clearer way to look. Post soon.