Picking up gritty like substance. I am not sure if it's from my filter(medium is ecoglass) or from when I pressure washed my concrete decking around pool. I have a blue diamond robot and I been running it 2-3 times a day,the bag has what looks to be sand in it. It's not a lot but want to make sure my filter isn't leaking sand into pool.
How do u know if u are losing sand?