What size pool filter for a 33000 gallon pool?

For a 33,000-gallon pool, you'll typically want a pool filter with a flow rate of at least 1,000 to 1,500 gallons per hour (GPH) for effective filtration. This translates to a filter size of around 24 to 30 inches in diameter for sand filters, or a cartridge filter rated for at least 200 square feet. It's important to choose a filter that can handle the pool's volume efficiently while allowing for regular maintenance and cleaning cycles. Always consult the manufacturer's specifications for the best fit for your specific pool setup.