Hi everyone. As you can see below I have a dual speed 2HP pump with 250lb sand filter. When I backwash on high I do loose sand out the waste water and when I vac my pump basket is often only 1/2 full. I really need to watch the pump basket when running my wall suction cleaner (Kontiki2) and manual vac so the flow rate does not get too low and almost run dry. I recently had to replace the ceramic seal on my pump due to leaking after .5 season. I am worried I am causing more harm than good by running the pump on high for these functions and straining the pump and or filter.
Is it ok to do all my pump functioning on low which would be 1/2 HP? I have backwashed on low this last time and it seems to work better as in I don't loose sand and not so much sand in view glass but it just takes a bit longer to get to clean water.
Will 1/2 HP be enough to manually vac with?