Looking for some advice here before needing to call in an expert. Returned home tonight from two days out of town to find filter pressure around 6psis. Just installed a new Pentair Tagelus 60d ClearPro sand filter two weeks ago after my Apollo DE filter had some issues. The new filter had been running at 10-14 psis since installation.
Last night upon returning I noticed the water flow was bad so cleared the skinner basket (while it had stuff in it, it was not totally full). Water level was unusually high due to rain on Friday so drained some (using the waste setting on the filter). Upon restarting the filter is when no pressure was registering and very little was coming out the return jets.
Cleaned pump basket, checked to verify nothing was clogging the impeller and nothing was clogging the pipe entrances at the bottom of the skimmer. I could feel suction pulling water in but it didn't feel as strong. No other signs of suction side leak either.
Only out of the ordinary routine care was over the course of the last week I've added two gallons of liquid stabilizer (call me lazy for not using the cheaper granulated stabilizer, but I wanted the instant "gratification" / chlorine protection. Come to think of it after I added the first gallon the pressure came down from 14 to 10 overnight. Anyone hear of liquid stabilizer causing plumbing issues, or am I dealing with a potential clog somewhere else in the line?
I was running the pump 24 / 7 while I was gone but that is because I need a replacement timer. Turned the pump off and will try playing around with it more tomorrow evening. Any advice?
Last test results from Fri morning.
FC - 11
CC - 0
TA - 90
CH - 225
CYA - not quite 20 yet
Ph - 7.4