Love my new Dolfin Premium 30. I have had a pool for 30 years and this is the cleanest/clearest the water has been ever. I normally use my scuba gear to go down for 45 minutes most every day and clean with the pump. I could see exactly where debris/ algae, etc would begin to collect and always thought that almost clear was the best that I could get. My Dolfin goes in each night (with the pool cover on)and comes out in the morning. I don't think the water could be more clear. Thank you.