Any associated abdominal pain ?
Burning while Urination ?
Can you elaborate further what things do you seen floating in urine ?
Duration of these symptoms ?
Any investigations done so far ?
Some times when there are stone in kidneys small sand like particles are released into the urine as sludge .Preferably you should atleast undergo a microscopic examination of the urine .Also this will rule out any RBC or any pus cells in the urine ruling out infection .
Hope this helps