Arctic Spas® are the first in the hot tub industry to use Reflex Torsion hose in every spa. This highly specialized pipe is designed to fit externally over rigid PVC, glued into every fitting to allow greater gluing surface and higher water flow and eliminate fitting leaks due to hose movement. This pipe actually swells to absorb stress from fittings. Reflex Torsion hose is clear with a colour coded strand of PVC running through it. This makes for easy troubleshooting and allows us to see the red-coloured glue at all glued fittings when inspecting each spa.