It is possible to buy different hoses for the hot tub or its accessories.
50 mm hose is used for installing the heater to the hot tub. Approx. 1,5 metres of hose come with the heater set but you can buy more as an extra accessory if you need to place the heater a bit further away from the tub. This hose has a metal spiral inside to avoid deformations and problems with water circulation.
38 mm hose is suitable for connecting the filter system to the hot tub. This is a very flexible hose produced from polyethylene. It is possible to bend the hose after every 400 mm.
32 mm hose is to help to lead away the drain water. You can buy this hose as an accesssory if you need to lead the water further away from the hot tub.