Dog Rocks Â® are a 100% natural, paramagnetic igneous rock mined from a quarry in Australia. They contain no chemicals and have been scientifically tested and proven safe for all pets.
In brief: Water. Free fluid is typically water. The lining of your abdominal contents are slippery (your bowel, the lining of your organs) and it's thus wet inside your abdomen. It's normal to have a little free fluid in one's pelvis, as that's where fluid tends to pool.
In short, free chlorine is chlorine that is available and ready to help keep your pool water clean. Combined chlorine has been âused upâ and will no longer help with sanitizing your water. Total chlorine is the sum of both the free chlorine and the combined chlorine.