33 ft Pool Filter

Just wondering what sand filter I would need to work for a 33 ft round pool. Right now I have a cartridge filter and it does not get the job done. Any suggestions?


Hi. This page talks about the pros and cons of different filter systems for above ground pools.

Above Ground Pool Filters

A cartridge filter actually has a finer cleaning capability than a sand filter. It all depends on the size of the pump and the size of the filter element. A large cartridge filter matched with a 2 speed 3/4 to 1 1/2 HP pump would actually make a nice system for a 33 foot pool.

I prefer the two speed pumps but if you go one speed it should be at least a 1 HP. If you go with a 1 1/2 HP you should have two returns to handle the increased flow of water.

A sand filter should hold at least 150 lbs of sand to clean that size pool. Larger capacity is fine also.

DE filters are a little more complicated but they are the best cleaning filters on the market. Again, you just need a system with enough cleaning capacity to match your pool size.