Mystery on low jet pressure

[bowers32]

So glad I found this forum!!! Here is the situation I am facing.

I had someone come out and replace the sand in the sand filter and in the process they reconnected the piping to the pumps and such.

I immediately had low pressure coming from the pool jets. I backwashed etc... no help.

Someone recommended running it on recirculate a bit.. so I did for about 30 minutes and that helped for about an hour or so

So left it on recirculate for about 5 hours... and got full jet pressure for about 2 days and now it is back to very low pressure from the jets

The pool guys have come back out and checked everything they can think of and are stumped

Anybody here with any ideas of solutions?

 

[mknauss]

Welcome to the forum.
Typically low volume in the returns is due to algae plugging the filter.
Can you post a full set of test results from your own test kit? Can you post a picture of the pool water?