dalejanus
07-07-2014, 05:27 PM
I have 10-12,000 AG pool with hayward s166t sand filter. The sand has not been changed in probably 10 years (since we put pool up). This year we replaced the vinyl liner and got a new skimmer with new vacuum connector.
When I am using the vacuum, it holds suction, but it does not appear to pick much up.
I have also noticed very poor return pressure. When my PH is low, I often raise the eyeball to aerate the water. This works great after I backwash, but within an hour or so, the pressure is so low, there is no aeration.
I got new hoses to go with my new liner this year, and a few new connectors to the filter. I did not use teflon tape, and I think some of them are leaking. Also, the gasket between the filter and valve may be leaking.
I did notice the filter said flow rate is 35 gpm and my 1hp pump is 60gpm. But I have had this pump for 2 or 3 years. I tend to run the pump 24/7.
Any suggestions as to what my problem may be? Should I open the filter and see what's happening inside? Change the sand?
Try more backwashing? I just realized I never rinse after backwash, so I will try that tonight. I backwash for 2 minutes, even though the glass is always clear.
Both pool and pump strainer baskets are clear.
I don't record the pressure gauge, but it's always around 15-20.
Since it works ok after backwashing, I don't think I have mechanical or debris problems. I am guessing something in the filter or perhaps my small leaks around the fittings.
When I am using the vacuum, it holds suction, but it does not appear to pick much up.
I have also noticed very poor return pressure. When my PH is low, I often raise the eyeball to aerate the water. This works great after I backwash, but within an hour or so, the pressure is so low, there is no aeration.
I got new hoses to go with my new liner this year, and a few new connectors to the filter. I did not use teflon tape, and I think some of them are leaking. Also, the gasket between the filter and valve may be leaking.
I did notice the filter said flow rate is 35 gpm and my 1hp pump is 60gpm. But I have had this pump for 2 or 3 years. I tend to run the pump 24/7.
Any suggestions as to what my problem may be? Should I open the filter and see what's happening inside? Change the sand?
Try more backwashing? I just realized I never rinse after backwash, so I will try that tonight. I backwash for 2 minutes, even though the glass is always clear.
Both pool and pump strainer baskets are clear.
I don't record the pressure gauge, but it's always around 15-20.
Since it works ok after backwashing, I don't think I have mechanical or debris problems. I am guessing something in the filter or perhaps my small leaks around the fittings.