Active Aqua
Active Aqua AAPW550 Submersible Water Pump, 550 GPH, 33W, 6 Ft Cord
feeding a hydroponic-style chiller, circulating a tub that has no hose ports, pumping a tub out into a utility sink
One wide rubber-topped step with a rail to hold, for a tall tub wall on a hard floor.
The awkward part of an upright cold tub is the wall: about 30 in of soft-sided tub with nothing firm to hold. This step stool from Drive Medical, a maker of mobility aids, puts a ribbed rubber platform of about 14 × 10 in (36 × 25 cm) beside the tub and a steel handrail 34 in (86 cm) high next to it. The frame is welded steel on rubber feet, with a listed capacity of 500 lb (227 kg), and it arrives assembled.
It is one step, no more than 10 in (25 cm) high, so it shortens the climb rather than removing it, and the rail is on one side only. The listing describes a household stool, not a spa step – what recommends it here is the rail, the rubber and the footprint.
Tip: Stand it snug against the tub with all four feet flat on the floor, and check that it does not rock before you trust it with wet feet.
Active Aqua
feeding a hydroponic-style chiller, circulating a tub that has no hose ports, pumping a tub out into a utility sink
Active Aqua
adding a chiller to a tub that has none, tubs of up to about 90 gal, holding a set temperature between plunges
DOGITY
chilling a cold plunge without a chiller, occasional plunges, topping up cool hose water in fall