When the swim spa tub is turned off, the water pump stops operating, and the water flow naturally ceases. This means that even if you turn on the tap or drain, the water will not flow or circulate as it would during normal use.

Most swim spa tubs are set between 34°C and 40°C. While this temperature can soothe muscles, prolonged exposure can lead to: • Continued vasodilation, resulting in a drop in blood pressure; • Increased heart rate to maintain circulation; • Increased burden on the body's thermoregulatory center; • Excessive sweating leading to dehydration.

If you will be away for extended periods during winter (e.g., weeks or months) and cannot regularly check the water quality and temperature of your swim spa tub, keeping it full may actually be riskier. In this case, you can choose to drain the tub, but thorough antifreeze treatment is essential.

"Cloudy water" is one of the most common phenomena observed during swim spa tub use. The main causes include: • Accumulation of organic matter in the water • Clogged filtration system • pH and chlorine imbalance

Under most real-world conditions, the water in a swim spa tub, without added disinfectant, typically only maintains a safe usage period of 1–3 days. After this time, bacteria, fungi, algae, and other microorganisms will begin to multiply rapidly, leading to irreversible water quality deterioration.

Even after you empty the bathtub, bacteria and sticky dirt may remain on the interior surfaces. If you don't flush before draining, these bacteria will continue to adhere to the surfaces and may even re-enter the circulation system during the next refill.