Hello Carlota, can You remove the filter with the filter housing and run the hot tub for 30 minutes. Then check inlet outlet connectors for any dirt blocking the filtration flow.

Bri Spin Intex pure spa jets here is the link for more information: www.hottubireland.ie/product-page/intex-octagonal-deluxe-bubble-jet-spa-hot-tub

Hello Anthony, the seats are extra You can purchase them separately here is the link for our website: www.hottubireland.ie/product-page/plastic-adjustable-seat-for-hot-tub

No