Appreciate the responses. The pool is in Florida where It is screened in. No large debris but very fine particles like pollen and dirt that do not filter well. Rain over the screen also adds fine particles. I had a 1HP 2 speed hayward but the lower speed didn't do the job. The pump is 3 years old but I failed to run it when we had a recent freeze, thuis bearing squeal. I have to vacuum to waste often and waste a bit of water doing that. Curious if a cartridge will be easier and if the waterway brand has a decent reputation. I can get a 2hp dual speed and the filter for around 500.00 and may be better than buying a new pump and changing sand. The sand filter casing is also 15 years old. I know this may be a stretch and may think otherwise eventually but i am not turned off by the difficulty in cleaning the filter. Thanks for the help