I have an intex ultra frame pool, with the dual intake setup into a sand filter pump, i believe the 2800 gallon per hour version + the 7000 salt filter system..
Its only a few months old.. had been doing fine, backwash periodically and as recent as yesterday (briefly).
Last 2 days i noticed the water level in the filter basket was getting low and the return stream seamed weaker and the suction on one of the intakes was weaker or nill too (i have one plugged, the other open into the skimmer wall basket). I also appeared to have some bubbles in the intake tubes off the Y area that goes to the pump.
So.. yesterday I shut things down, released the valve on the filter basket to let the water go back up, also took off the plug on the one intake so both were open, briefly backwashed then rinsed till any brown was gone from the stream.. turned everything back on.. pressure felt good on the intake..
But i'd put the intake plug back on and the outflow on the return diminished and eventually the basket would lower in water level till i had the same issue.
So this morning I checked things again (same low pressure on return/intake situation) but this time when i went to do the backwash, it barely trickled out.. rinse came out slightly better but nothing like it should.
This is my first time around with a pool and pumps, so i'm sure i'm missing something or maybe something (spider gasket ? read on here) has gone bad, but its only months old.
I know I should have checked the sand pump pressure on backwash but i didnt do that yet, though i did look on normal "filter" and it seemed to be in the green (10?).
Any thoughts or suggestions?
Thanks in advance