We've been using a vertical grid DE filter for our pool for years, but it has cracked and is leaking. It needs to be replaced and I'm considering my options for its replacement. Due to a busy travel schedule, I am available to service the filter only once every two or three months. Unfortunately, there is no one else who is able to do this. (You'll have to trust me on this.)
I've never used a sand filter, but have heard that they are very easy to maintain. Unfortunately, I don't think they will provide the level of filtration we are used to with our current DE filter.
A neighbor suggested that I might try a cartridge filter saying that they are very trouble-free. I am concerned, thought, that they may require more frequent attention than I am able to provide. I've had people quote me service intervals for cartridge filters ranging anywhere from a couple weeks to a year. What's the right answer here?
Moreover, what is the best type of filter for extended service intervals?