thedubb
05-29-2013, 01:38 PM
Hello, needing information about pump size (HP). I'm a new pool owner and purchased a pump and filter system used from a friend and I'm concerned the pump is too large. My sand filter has a filtration flow rate of 34 GPM. Not sure if that is the MAX or recommended.
Pool Specs:
15 x 30 Oval approximately 10500 gallons
Pump - Hayward 1.5HP
Filter - Hayward Pro Series S180T 34gpm
1.5” tubing.
I used this system last summer with poor success. I had cloudy water all year. You could see particles in the water all the time. Chemicals were good. I took many samples to the store for testing. When I went to remove the cover the other day it failed and a lot of debris went in the pool. I have very dirty water so I got it tested and started the shocking process.
After a couple of days of no improvement (water turned bluish green but not clearing) I disassembled the filter and found the assembly was cracked so I replaced it and added 150lbs new sand. I also replaced the control valve assembly because it stopped backwashing. When I first turned on the filter after the repairs, it had much more output pressure. However, in less than an hour, it died down to just a trickle. I backwashed, rinsed and it had massive output again. Filter and strainers are clean, no blocks in lines.
Is the algae clogging the sand that quickly? Or is the pump to strong and messing up the filter?
I know from researching that a 1.5hp pump can move approximately 80 gpm. My lines are 1.5” which should reduce that down to approximately 44 gpm but is that still too high for the filter?
Pool Specs:
15 x 30 Oval approximately 10500 gallons
Pump - Hayward 1.5HP
Filter - Hayward Pro Series S180T 34gpm
1.5” tubing.
I used this system last summer with poor success. I had cloudy water all year. You could see particles in the water all the time. Chemicals were good. I took many samples to the store for testing. When I went to remove the cover the other day it failed and a lot of debris went in the pool. I have very dirty water so I got it tested and started the shocking process.
After a couple of days of no improvement (water turned bluish green but not clearing) I disassembled the filter and found the assembly was cracked so I replaced it and added 150lbs new sand. I also replaced the control valve assembly because it stopped backwashing. When I first turned on the filter after the repairs, it had much more output pressure. However, in less than an hour, it died down to just a trickle. I backwashed, rinsed and it had massive output again. Filter and strainers are clean, no blocks in lines.
Is the algae clogging the sand that quickly? Or is the pump to strong and messing up the filter?
I know from researching that a 1.5hp pump can move approximately 80 gpm. My lines are 1.5” which should reduce that down to approximately 44 gpm but is that still too high for the filter?