+1 on posting a picture. Generally speaking, sand filters are more short and squatty... kinka like an old school round grenade. DE and Cartridge filters are going to be more of a cylinder.
Here is a decent picture of the various filters. #1 and #3 are sand:
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!