I recently purchased an M600 robot, it has worked real well as far as cleaning (the iOS app needs work). I’ve noticed that after (& during) the water develops a little haze/slightly cloudy; prior to running robot water is much more clear. Any ideas on why the cloudiness? It’s a 25k gal plaster (now painted, previous owner) pool in ground, sand filter. I backwashed filter upon first noticing & water cleared back up, ran cleaner again & cloudy again. Any ideas on whether this is normal or something else going on?