Here is a thread which has exact same picture as my filter (Purex Triton seahorse):
Since it is a cartridge filter, I was wondering if they require backwashing. I have read lots of threads about backwashing sand filters but wondered if this one needed it.
If it does - can you please point me to the switch to set it on backwash mode, on the filter? There is a air valve/bleeding valve on top of the filter but not sure if it is the same one,.
There is also a backwash setting on the pool plumbing, but I was wondering if you have to set a switch on the filter itself for backwash, or is the pool plumbing valve enough.