Originally Posted by Speedbump
If you just replaced the silica sand, you may have bought too fine of a sand and it's going through the screen that is supposed keep the sand in the filter.
You really shouldn't have to change sand anyway. You can't hurt it by backwashing it. Sand filters work their best just before they need to be backwashed. The film of hair etc on top of the sand is what does the best filtering.
@ Speedbump..Thanks for the Comeback
I hear You, for lack of better words it was "Pillar to Post" decision...As the Pool came with the House when we bought, nature of the beast not everyone follows the manual as they should leaving room for surprises if you will..Some you catch right away and others down the road..lol...As I may have said in a previous Post we have issues with Hard Water & Iron Content..We had dealt with a previous Water Filtering system that Sucked big time, changed that out to a system that has been performing top notch.. According to the records @ the local pool store our Pool is 10 yrs old this Season..I pulled the top off the filter drum back beginning of May, the silica sand was hard, crusty, and a rust color...Hence the decision to start with a fresh batch...
Like seeking a 2nd opinion for Medical Advise , I spoke with another Pool Store and they suggested I just monitor the silica sand we see coming from the Return...Their Answer to my Query as the main Control Dial sits on a PVC pipe that runs right down through the s/s connecting to a donut style ring...It very possible that while we were refilling the filter drum some of the s/s got into the pipe, hence it finds it's way through the return...btw it's not a constant amount, just seems to happen after we turn the pump back on after cleaning the filter basket on the pump, like a momentary surge..They say if what I described happened, it should clear itself out..