Hot tub water treatment options

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To have the most enjoyable experience while bathing and to ensure that the spa runs well for years to come, one must consider cleaning the spa a necessary task. Not to waste valuable water, by changing it frequently, one should consider special water care sets and filters. They keep the tub water clean for extended periods of time because they purify the tub water by getting rid of slime, organic particles, and bacteria.  Let us explore these ways to maintain the water clean in more detail:

How often should the water of a wood fired hot tub be changed?

After every bathe unless water cleaning solutions or filtration systems are used

should hot tub water be clear

In short, yes, and to obtain this water chemicals or filtration systems must be used.

should hot tub water be cloudy

No, water in the hot tub should not be cloudy. Consult various water treatment options

which hot tub chemicals are best

We do recommend solutions with very small chlorine amounts. AquaFinesse hot tub water treatment sets are a perfect solution to keep the water clean

why hot tub water green

It is because algae started to grow. Do not bath in such water. Change the water and use various water treatment solutions later on.

do wood fired hot tubs need chemicals

Generally, there are 2 solutions to keep the water in good condition. One can use mild chemicals or the better way is to use water purifying filters such as sand filter and UV (ultraviolet) filters.

how to clean hot tub water

The use of sand filter and UVC filter cleans hot tub water. Also, one should regulate the pH level of water. The recommended value is 7 – 7,4. Use active oxygen for disinfection. In order for the water to be crystal clear, it is necessary to use a flocculant/coagulant. ALGAECIDE – algaecide is a high concentration prophylactic against algae.


Hot tub water care instructions

General indications

Water circulation through a sand filter and water disinfection with chemical products help to maintain the quality of water in the hot tub. Hot tub care is necessary to carry out once a week on average or more if the hot tub is used more intensively.

Sand filtration + UVC filter

The hot tub can have a filter (sand filter) with a filtration element (sand) installed, which cleans the water from sweeps that are in the water. UVC filter is usually (not always) installed together with the sand filter. UVC hot tub filters help to fight bacteria. The water is pumped through the UV-C device, where it is exposed to UV-C radiation at a wavelength of 254 nanometers. The radiation is produced by a special light, which ensures that germs and bacteria are not given the opportunity to develop.

Chemical treatment of water

During the operation of the wooden hot tub, the formation of microorganisms in the water intensifies. In order to avoid the contamination of the hot tub water and accordingly use it safely, it is necessary to:

  • treat the water with chemical disinfectants;
  • maintain the pH level;
  • destroy algae that may be in water;
  • perform coagulation.

PH level regulation

PH level must be 7,0 – 7,4. Such limits are necessary for the effective exposure of chemical products. For the pH level control, tester and testing tablets are a necessity. If the pH level is higher than 7.4, it is necessary to use the measure of “pH-minus“. If the pH level is lower than 7.0 it is necessary to use the measure of “pH-plus”.

Before using chemical products, it is always necessary to make sure that the pH level match with the norms: 7.0 – 7.4.

  • pH-minus lowers the pH level of water
  • pH-plus increases the pH level of water

PH MINUS GRANULES

The measure used to lower the pH of water. The ideal pH of the water must be within the range of 7.0 – 7.4. Dosage: 150g granules for 10m³ of water reduces the pH value by 0.2, for example, if the tub contains 50m³ of water and the pH must be reduced from 8.0 to 7.0, then the measures  5x5x150=3750g must be used. The dosage of granules should be increased in hard water and decreased in soft water. Before using the amount of granules required is dissolved in water, gradually pouring the granules into the water, but not vice versa. The prepared solution is poured into the water around the entire perimeter.

Water disinfection with active oxygen

The water pH of 7,0–7,4 is recommended to ensure the effectiveness of the disinfection. Optimal oxygen content in water: 5-8 mg / l. The tablets are placed in a skimmer or floating chlorinators. Do not pour tablets directly into the water. The initial dosage: 10 tablets / 10 m3 of water. For constant water treatment: 5 tablets / 10 m3 of water once a week. If the volume of the tub is about 1500 l of water, we would need approx. 1 tablet (20 g.) of active oxygen once per week.

Quick dissolving chlorine (chlorine shock)

The water pH of 7.0-7.4 is recommended to ensure the effectiveness of disinfection. The optimal amount of free residual chlorine in water: 0.6-1.0. Dissolve the required amount of granules in water before use, gradually pouring the granules into the water, but not vice versa. The initial dosage: 80–100 g of granules / 10 m3 of water. For constant water treatment: 35 g of granules / 10 m3 of hot tub water every 3–6 days. If the volume of the tub is about 1500 l of water, we would need approx. 5 g of chlorine once per week. The prepared solution is poured into the hot tub around the entire perimeter. Perform chlorination after sun exposure and do not use the hot tub until the required amount of free residual chlorine has been reached. It is recommended to bathe in the tub no earlier than after 12 hours. Perform a chlorine shock at least once a month after refilling with new water or after a bigger bath. When you are doing the procedure of chlorine shock, there must be no or minimal active oxygen in the water.

Prophylactic against algae

ALGAECIDE – algaecide is a high concentration prophylactic against algae. Liquid algaecide disinfects the pool or hot tub water and cleanses it of algae. The water pH of 7.0-7.4 is recommended to ensure the effectiveness of the disinfection. The amount of product required for the hydromassage system is calculated based on the volume of the bath or hot tub. It is appropriate to do the preparation of water in the evenings by slowly pouring the products along the walls of the hot tub or pool. If the volume of the tub is about 1500 l of water, we would need 15 ml of this liquid once per 2 weeks using together with 20 g of active oxygen tablet.

Water clarification

In order for the water to be crystal clear, it is necessary to use a flocculant/coagulant. During the action of the used measure, the micro coagulation particles combine to form larger compounds, which later remain in the filter. The water clarifier is designed to combine the smallest particles into larger ones in the water so that they can be trapped by the installed sand filter. The measure is suitable for use only with sand filters. If the volume of the tub is about 1500 l of water, we would need 10 ml of this liquid once per 2 weeks.

Water level in the hot tub

The water level in the pool or hot tub must be maintained. When there is an insufficient amount of water, air may appear in the system and consequently may become a reason for the circulation pump failure. During the operation of the hot tub, it is necessary to monitor the water level and, if necessary, add more water in the hot tub.

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