Is there any difference between filters that are sold as "Above Ground Pool Filters" and "Inground Pool Filters"..specifically the Hayward Star Clear Plus Cartridge filter? Pretty sure it's fine as I've seen others here running it on their AGPs. Just making sure. Only difference I see is the hose connections are on the bottom instead of top... right? Does that affect the way it functions at all, being at a lower height ?

I already have a new pump, and looking to replace my existing undersized sand filter with a cartridge filter. My water isn't crystal clear like I want it to be & I hate running the pump so many hours. My pool info is below, just looking for opinions on what size cartridge filter would be the best bang for my buck also? the c500, c751 or c900? My pool's small and I can use valve to slow down flow SOMEwhat. I have 1 1/2" plumbing.

Thanks so much!