Thank you for your question. The filter pump included require type H filters.
I am very sorry that we are out of stock of this item. At this time, we are unsure when we will have this item in stock again. The best solution would be to check in on that listing once a week, as we do get shipments in quite frequently. If about 4-6 weeks go by and it is still out of stock, we have more than likely discontinued the item. Please let us know if you have any other questions about items that we do have in stock!
Thank you for your question. The pump is available for sale separately.
Thank you for your question, there is a place to put your email and they will notify you once it is available !
Thank you for your inquiry to Home Depot. The Intex 10 ft. x 30 in. Round Easy Set Above Ground Inflatable Family Swimming Pool and Pump, Blue has a 180 return day policy. If you do need to return it, We have many options to return like to your local store or we can set up a carrier pick up for you. We appreciate your business and look forward to serving you in the future.