I opened up the filter and the sand is now just a hair under the basket. so I closed it up and did a back wash, i could feel the grittiness of the sand on my hand for about 2-3seconds then nothing. looked at the sight glass and there was just a little bit left and was slowly diminishing.
back washed for a little over a minute, then rinsed about 10-15secs. then switched it to filter. the return isn't as powerful as what it was. and when I first started the pump system for the very first time. I had a reading of 14psi.
Now that I have back washed etc, today it is running right at 10psi.
Anything wrong with that???