Instruct: Classify Amazon reviews into positive or negative sentiment
Query: very easy

Purchased my saltwater system with pump and filter three years ago. worked very well no real issues. The only draw back is the system is not real easy to adapt to other systems other than INTEX . When I replaced my pool with an above ground different brand it was a real challenge to adapt. Unfortunately the pump did not run my pool cleaner very well since the inlet was now in a skimmer rather than the side wall. The pump could not produce a siphon. I ended up replacing the pump filter and chlorine generator Simpl-Chlor works ok but has to run eight hours as apposed to three with the INTEX brand. Cells only last two seasons. I had my INTEX system for three years then gave it away and it is still running strong with the same original cell. Cleaned the cell yearly in white vinegar. If your pool chemistry is off you will have calcium deposits staining and a whole myriad of potential problems.