Water chemistry on a hot tub can be one of the most challenging things to learn about on any hot tub, and our cedar tubs are no different. However, once you understand the basics, managing your water is very straightforward.
When you first receive your hot tub and have it set up and connected to power you'll begin by filling the hot tub with clean, fresh water from a reliable source. Avoid using well water with high iron or mineral content, as it can cause staining and water clarity issues. If your well water is high in mineral content, inline filters can be connected to your hose while filling to filter out the majority of contaminants. If you did not use a filter, no worries - minerals and iron can be managed after the hot tub is full and running.
After the first 2-3 weeks of the tub being filled the leeching of tannins and oils from the wood will be mostly complete. We recommend doing your first water change at this time to remove the excess tannins and oils to more easily maintain clean, clear water.
Maintaining clean and clear water starts with testing. Use water testing strips or a water testing kit to check the water chemistry regularly. Aim to maintain the following levels:
pH: 7.2 to 7.8
Total Alkalinity: 80 to 120 ppm (parts per million)
Calcium Hardness: 150 to 250 ppm
Free Chlorine: 0 to 3 ppm
Proper water chemistry ensures that the sanitizers can do their job effectively and keeps the water feeling fresh and soft. pH, Alkalinity, and Calcium can be adjusted with their respective chemical adjusters (pH up, pH, down, hardness booster, etc.) Remember, all our tubs come with an ozone generator so there does not need to be a constant level of Free Chlorine in the water at all times. We recommend dosing the tub with chlorine (read the label on the chlorine bottle and take note of the volume of the tub for proper dosing) on a weekly basis or as needed.
Instead of bromine, opt for a chlorine-based sanitizer suitable for hot tubs. Chlorine is more compatible with wood surfaces and is effective in keeping the water clean and safe.
If a constant level of chlorine is desired a floating dispenser can be used. Use a floating dispenser specifically designed for hot tubs. This will ensure a gradual and even distribution of chlorine, preventing damage to the wood caused by direct contact with concentrated chlorine.
Every 3 to 4 months (or as needed depending on usage and water quality), drain and refill the hot tub. This will refresh the water and prevent the buildup of dissolved solids that can affect water clarity and sanitation. Clean the hot tub's interior surface using a soft brush and a mild, non-abrasive cleaner (dish soap) suitable for hot tubs.