Help with small deck ..

[Rob Tucker]

A plastic or fiberglas tank like that should sit level on a concrete pad. Use expandable foam to close and fill any gaps underneath it. That will both insulate and help evenly support the tub. You don't want cracks to develop.

I also do not recommend the blowers that make lots of bubbles. They are not therapeutic. Those blowers sound like a vacuum cleaner which is annoying and that volume of air moves heat out of the water real fast. Hydro-therapy jets are another matter. They such in air quietly by venturi action and they are therapeutic.