Have an above ground pool, new 1hp Jacuzzi pump, new multisport valve on Hayward pro series s166t sand filter and just replaced the sand. Laterals are not cracked or clogged. Hardness is low 100, ph 7.2, cya low 20, ta 100, heavy cloudiness after SLAM and when filter wouldn't clear, tried flocculant which failed to settle debris. Been fighting this pool for a month.
Read other forums that were no help. Why does the flow reduce to nothing after a few minutes? If there was a clog, why would a backwash temporarily fix it?
I'm suspecting the multi port valve but what is going on? Have read "experts" say the pressure relief valve is clogged but this filter doesn't have one. Have read that air is getting in the suction side but there isn't a single bubble. Have read that pea gravel needs to be placed around the laterals but Hayward, and I don't advise this. Even when sand gets dirty, there will be some flow. This pool drops to zero.
Help!
Read other forums that were no help. Why does the flow reduce to nothing after a few minutes? If there was a clog, why would a backwash temporarily fix it?
I'm suspecting the multi port valve but what is going on? Have read "experts" say the pressure relief valve is clogged but this filter doesn't have one. Have read that air is getting in the suction side but there isn't a single bubble. Have read that pea gravel needs to be placed around the laterals but Hayward, and I don't advise this. Even when sand gets dirty, there will be some flow. This pool drops to zero.
Help!