I purchased the dolphin premier last summer and I’m beginning to question the quality of it. I opened my pool last Monday( gunite inground) and the robot has been going since. As of today there is still dirt on the bottom and I have tried using the bag and the other two filters it came with. I’d like to think I’m doing something wrong but it seems self explanatory. I don’t expect perfection but after a week and the amount of money it costs, there’s no reason it should still be this dirty. Any help is appreciated. Thanks