inputs.text: worthless - yes bubbles great like getting water splashed floor otherwise not much use no heat instructions caution unit not heat cold water neither keep hot water hot basically small tub little pointed spikes bottom not worth much massage three interchangeable massage inserts see picture one front center two stored unit front edge likewise provide little no massage nothing get way plus side plenty large wear mens size 13 shoes room least two sizes larger holds little water gets cold minutes running motor cools water even quicker guess air bubbles take away heat tried using unit without power put garage used large bucket half price stays hot longer