Odd thing - last year the pressure gauge on the sand filter died on me (always showed the highest pressure reading, on or off). So I replaced it last year with a new one, and mid way through the year it died again. I could go out and get yet another gauge but is this indicative of another problem by chance?
Also, the filter likes to spit sand into the pool, esp after a backwash. I've read this could be a busted lateral - is it dangerous to run the filter with busted laterals or is it just an annoyance?