MPython43 said:
We are located in Austin.
www.patriotpoolandspa.com
Cartridge is more "green" since you eliminate backwash cycles, therefore saving significant amounts of wastewater. You can also run variable speed pumps much more slowly than a DE filter, while still achieving effective filtration, which saves electricity.
This is the one reason I've stuck with my cartridge filter set-up. I installed a variable speed pump last year and like the fact that I can run whatever speeds I want.
On that note, here's a question (and sorry to derail). I run my variable speed pump overnight at the lowest speed and then run at high speed for only a few hours during the hottest time of the day. I've found ZERO algae, chlorine levels are good (saltwater pool) and I haven't had anything come up from my own testing or monthly testing at Leslie's or Dolphin.
My back of the envelope calc tells me I get the pool water turned over twice (if I remember correctly) per day. Is there any downside to essentially running a variable speed pump 24 hours like this? I'm essentially running the pump at the highest speed only a few hours a day. I don't appear to have any issues.