I have an in-ground two year old pool with a pebbletec surface. Test results below. With fall starting here in Houston I get the occasionaly organic leaf stain that when I raise my FC goes away overnight. However, the past few days I have noticed something strange. I have a raised hot tub will a spillover into the spill where a step is directly under the spillover. This step area had a large, irregular, pattern of light brown staining on it. Not in the typical leaf shape and not in an area where leafs had been sitting. I used a puck and scrubbed it over the stain, waited a couple of minutes and brushed it away. Thought nothing of it until the next morning it was back... Repeated same process but now I have done this four times, removed all leaves from pool each day (never ending battle as surrounded by trees) and starting to wonder what in the world is going on? Any ideas?
CL - 4.0