After some dirt work and water spraying all over me (because I forgot to glue my pvc), I finally got my sand filter installed and really like the pump/filter so far. A lot more power than the 1500 gph cartridge filter/pump I was using.
Anyway, I could have sworn I read here last year that with sand filters, when you add your chems each day, you should set your pump on "circulate" instead of "filter". I could not find this anywhere after searching today. Any truth to this statement?