I have a pentair 320 clean and clear plus filter. Pool is 1 1/2 years old. Having to keep variable speed pump on speed 4 (3550). Instead of low economy setting to get any flow. Water coming over spa spillway to pool is very very poor. Water does not seem to circulate in pool at all. Have yellow algie also. Treat but does not help. We clean pump filters and water bubbles into jacuzzi and spillway is thick flow for about 2 to 3 days then then back to nothing. Cleaning pump filters every week. This is ridiculous. Spa jets hard after cleaning then barely any jet pressure at all. Pool is 36 x 15 with 7' diameter spa. Deep end is 7 .5'. We were never shown how to operate the system. Please help. Also can't seem to maintain ph or cholorine levels. Chlorine always low to 0 even after adding tons, alkaline high, no residual chlorine either. Would appreciate any feedback or suggestions. Thank you so much for any help, patricia