I'm debating my wisdom/choice of going w/ a sand filter vs. a cartridge filter. Reason being is all the water/money I'm wasting backwashing into the woods; especially when I'm doing a SLAM. I'm really wondering if I could have done myself a favor by opting for a cartridge filter. Also, I'm guessing by its very nature of needing to be disassembled to clean, a cartridge filter system should be much easier to sterilize in the case of the dreaded mustard algae? Could one simply take the top off, remove the filters, and douse everything inside with bleach and rinse it all out?
I'm open to the idea of switching to a cartridge filter once I get to the point when my sand needs to be replaced. Since they have to come out anyway (my plumbing is so torqued down for little drip leaks I loathe to strip all the PVC trying to remove it myself), I might just switch the whole thing out.
Also, do cartridge filters typically run at a lower PSI than sand? My filter has ALWAYS been running at 19psi 'fresh', 14-15 psi on a backwash.