I bought a intex 24x52 from a friend who had upgraded it to a hayward easy clear system. I used that last year, but the cartridge was 4 years old at that point,and I was cleaing it all the time. So this year I picked up a used sand filter (doughboy media master), hooked it up in place of the cartidge(kept pump), and, well, I don't know. Rinsed and cleaned. Check. Filled with pool sand. Check. Backwash 3-4min. Check. I have strong suction and return. Runs at about 25psi. I started with a green pool. Put filter on recirculate. Dumped the algae killer in, wait 2 plus hours, shocked the **** out of it, went to bed. Next day, come home from work, pool mostly clear, algae dead on bottom. Put filter on filter to waste, hooked vacuum up, and sucked the algae and leaves out. Backwashed again for good measure. Set filter to filter. Did my chemicals. Water is clearish (lots of little specks) after running for the better part of 5 days straight. Hardly an improvement over the 2nd day. If I shut my pump off, I get a massive explosion of air and water out of intake and return. That combined with the high(?) PSI and "dirty" water has me wondering if things are working right. I'm thinking of adding an in wall skimmer as well as an aqua critter. Feel free to comment on those thoughts as well.
Thanks for your attention and comments.