Thanks for the info JAB
It's an above ground pool that's oval shaped It looks about 20 ft long and about 10 ft wide. The filter is a "sand filter" and it has a pump, automatic inline clorine feeder all fed by a skimmer.
The previous owners left the vacum, brush, hose, and a turtle thing that I assume cleans the bottom.
I have all sorts of chemicals as well PH+ PH- Algecide, chlorine, pool clear, ect. And I know what a test kit is but the only thing they left is a bunch of test strips wich I assume only test for PH and CL levels.
On the filter itself there's settings for "Backwash, Filter, Reciprocate?, winterize. I have no clue how to clean the filter itself, it says it's under pressure so I don't want to just open the sucker up. Does it actually have a cartrige?
Here's the realtor pics, I still havn't found wich box my camera is in:

