hey guys i have had a turtle for about 6mths in a 4ft tank.
i noticed this morning that the top of the water was covered in like a white, cloudy water, not the whole water just sitting on the top.

i stirred up the cloudy water with my filter by angling the nozel to cirrculate the water more. i have a good external canister filter as well as everything else that is required. i was just wondering if anyone knew what this stuff was, i have also noticed that the water smells a bit, but have only cleaned it about 2 days ago....thanks guys in advance