Hi all, I've been trying to tackle this problem ever since moving into my home. Basically everyday in the morning I would see small clusters of DE at the bottom of the spa and the a lesser extend, the pool. I would vacuum it away and it would come back the next morning. I read a bit about the possible causes such as ripped filter, etc. and proceeded to change out the filter grid set and manifold. It did not help much and I ended up hiring a professional to look into the problem, he was unable to remedy the problem as well so I am hoping the collective knowledge of this forum will guide me in the right direction. Here are the parts that have been replaced /added:
New filter grid set
New filter manifold
New O-rings on backwash valve (push pull type)
New O-ring on pipe that attaches to the grid assembly inside the Hayward filter
New O-ring between the two halves of the Hayward filter (the large one)
New O-ring on the pool pump basket window
Pool professional added check valve to help stop DE flowing back from skimmer
One thing I want to mention is when the pump is running, you cannot visibly see DE coming out of the return jets. However, if I go into backwash mode, run it for 10 seconds or so, then turn it back into filter mode, you can visually see DE coming out of the return jets for about a minute or so, and the spa will immediately become very cloudy. The pool professional double checked the grid is fine and mentioned if there is a rip the DE leak will be constant. Any help is greatly appreciated.
New filter grid set
New filter manifold
New O-rings on backwash valve (push pull type)
New O-ring on pipe that attaches to the grid assembly inside the Hayward filter
New O-ring between the two halves of the Hayward filter (the large one)
New O-ring on the pool pump basket window
Pool professional added check valve to help stop DE flowing back from skimmer
One thing I want to mention is when the pump is running, you cannot visibly see DE coming out of the return jets. However, if I go into backwash mode, run it for 10 seconds or so, then turn it back into filter mode, you can visually see DE coming out of the return jets for about a minute or so, and the spa will immediately become very cloudy. The pool professional double checked the grid is fine and mentioned if there is a rip the DE leak will be constant. Any help is greatly appreciated.