The deep clean isn’t too terrible to accomplish if you have a little time (way easier than removing & replacing sand)
- it’s something that should be done every couple seasons anyway.
After you know you’re sand is in good shape, you’re on your way with the
SLAM Process at the correct levels, & fc demand slows a bit you can try adding a little de to the sand filter to help it catch the finer stuff. But you wanna make sure everything else is good to go first & you’re on tail end of the process. If you do it too soon in the process the pressure can rise very quickly so some babysitting is involved .
Here’s the details on that
A clean pool filter will increase the efficiency of your pool! ... your filter are to backwash it, clean the manifolds and grids, and add new DE.
www.google.com
You should order more cya reagent - if you ordered on amazon they often give free shipping for anymore orders in the next 24hrs. You may want to confirm that your cya tube & squirty bottle are the same as the taylor ones, if not replace them- mine were but that was years ago. I buy the big bottle because it’s cheaper & the cya reagent lasts a long time if stored in a cool dark place.