Thansk for the quick response. I currently have an Intex pump that uses the Intex B filter.

I found the following used equipment locally that I was thinking of getting. I do not know the size of the pump yet. I would get just one of the filters, don't know wich one yet.

PUMP: Purex Triton Dynamo I think about 3-4 years old

FILTER1: Doughboy Silica Plus 0-1741-0000 Old - but has continued to work just fine for us.

FILTER2: Tagelus Delux - Was a friends - looks in new condition - its bigger than ours.