1 Importance of Chemical Treatment
Chemical water treatment in your hot tub is essential to ensure safe hygienic conditions, prevent the proliferation of bacteria and pathogenic microorganisms, and maintain crystal clear and pleasant water. Unlike traditional pools, hot tubs have specific characteristics that require particular attention to water treatment.
1.1 Hot Tub Specific Characteristics
Hot tubs present conditions that promote accelerated microorganism development:
- High water temperature: 36-40°C
- High organic load: greater number of bathers per liter of water
- Reduced volume: less than 2 cubic meters (2,000 liters) for standard hot tubs
WARNING: It is recommended to always use clean, potable water. Avoid water from wells or uncontrolled natural springs that may contain harmful sediments and bacteria.
1.2 Recommended Water Replacement
For hot tubs with capacity less than 2 cubic meters, complete monthly water replacement (4-6 weeks) is more economical than using large quantities of chemical products to maintain water in optimal conditions beyond that period.
2 Fundamental Chemical Parameters
2.1 pH - Hydrogen Potential
pH measures the acidity or alkalinity of water on a scale from 0 (maximum acidity) to 14 (maximum alkalinity). Correct pH is the most important water treatment parameter, as the effectiveness of all other chemical products depends on it.
Optimal pH value: **7.0 - 7.6**
Control frequency: Periodic with specific test kit
Adjusting pH that is too high:
- Use pH Reducer Corrector (BL-SPAPHM) proportionally to the water quantity
- Economical alternative: partial or complete water replacement with clean potable water
NOTE: Using clean potable water during changes makes the use of pH correctors almost unnecessary, as tap water generally has an already balanced pH.
2.2 Water Hardness
Hardness expresses the total content of calcium and magnesium ions due to the presence of soluble salts and heavy metals in the water.
Unit of measurement: French degrees (°fH)
- 1 °fH=10 mg/l of calcium carbonate (CaCO₃)
- 1 °fH=10 ppm (parts per million)
| Hardness | Classification | Required Action |
|---|---|---|
| Up to 4 °fH | Very soft | None |
| 4 to 8 °fH | Soft | None |
| 8 to 12 °fH | Medium-hard | RECOMMENDED water softener |
| 12 to 18 °fH | Fairly hard | REQUIRED water softener |
| 18 to 30 °fH | Hard | REQUIRED water softener |
| Over 30 °fH | Very hard | REQUIRED water softener |
3 Disinfectants and Chemical Products
3.1 Slow-Release Bromine Tablets - RECOMMENDED PRODUCT
Slow-release bromine tablets (20g) are the disinfectant recommended by Beauty Luxury for hot tubs, particularly suitable for heated water and/or indoor environments.
Bromine characteristics:
- Colorless: does not alter water color
- Odorless: no typical chlorine "pool smell"
- Leaves no residue or stains on surfaces or swimwear
- Format: Slow-release 20g tablets
- Dissolution: Weekly
- Treatment duration: Allows water use for up to 30-40 days
Directions for use:
- Insert the bromine dose into the filter compartment (skimmer)
- Tablets dissolve slowly over the course of a week
- Add a new dose weekly
- Dosage proportional to water quantity (consult product manual)
Advantages over chlorine:
- Ideal for indoor environments (no unpleasant odors)
- Greater stability at high temperatures (>35°C)
- Less irritation for skin, eyes and respiratory tract
- Constant and gradual release (slow-release tablets)
3.2 Alternative Disinfectants
Chlorine:
- NOT recommended for indoor environments due to the typical "pool smell"
- Requires more frequent pH control
Active oxygen:
- Higher cost
- May require more frequent dosing
3.3 SimplyBlu - Next Generation Algaecide
SimplyBlu is a next generation multi-action product that combines algaecide functions with water parameter balancing.
Multiple functions:
- Main function: Algaecide (prevents and combats algae formation)
- Maintains water parameter balance
- Counteracts limescale
- Counteracts dissolved metals
- Counteracts organic substances
Dosage and application:
- Dose: 100 milliliters per 10 cubic meters of water (equivalent to 10 ml per 1,000 liters)
- Frequency: Weekly
Procedure:
- Measure the correct dose based on the hot tub volume
- Pour the product directly into the water, distributing it evenly
- Activate filtration to aid distribution
- Repeat treatment every 7 days
4 Filtration Systems
4.1 Paper Filters (Standard)
Paper filters are the standard filtration system supplied with hot tubs.
Paper filter characteristics:
- Available types: different models depending on the hot tub model
- Material: Pleated paper with high filtering surface
- Lifespan: 1-2 years if well maintained
- Recommended maintenance: Cleaning every 30 days
Paper filter cleaning every 30 days:
- Remove the filter from the skimmer
- Rinse the filter in clean fresh water with medium pressure water jet
- Direct the jet from top to bottom between the paper pleats
- Allow to dry completely before reinserting
- Reinsert the filter into the skimmer
Consequences of a clogged filter:
- Reduced water quality (particles not retained)
- Slowed water flow through the circuit
- Less effective hydromassage (reduced flow rate)
- Increased pump workload (possible overheating)
WARNING: A damaged or punctured filter causes drastic deterioration of water quality and allows debris to enter the hydraulic circuit, damaging moving parts of the pumps (impellers, bearings) and blocking hydromassage nozzles. Replace damaged filters immediately.
4.2 Sand Filter - For Professional Use
Sand filters are mandatory for professional public use according to current Italian regulations.
Regulatory requirement:
- Public wellness centers
- Hotel spas
- Hospitality facilities with shared pool
Sand filter characteristics:
- Greater filtering power compared to paper filters
- Continuous filtering during use
- Ability to retain finer particles
- Periodic maintenance with backwashing
Sand filter maintenance:
- Filter Cleaner: Restores the sand's filtration level
- Use: At the beginning of the season and periodically during the season
5 Maintenance and Sanitization Products
5.1 Spa Sanitizer
Spa sanitizer is a product for deep cleaning of hot tub pipes and devices.
Recommended use:
- Professional public use
- Reactivation after long period of inactivity (winter closure, extended absences)
- Seasonal use before summer opening
- When persistent unpleasant odors are noticed despite chemical treatment
Sanitizer function:
- Eliminates bacterial biofilm from pipes
- Deep cleans nozzles, vents and hydraulic components
- Removes accumulated organic deposits
- Restores complete hygiene to the water circuit
Directions for use: Consult the specific product instructions for dosage and procedure.
5.2 Spa Vac Vacuum Cleaner
Battery-powered vacuum cleaner specific for hot tubs for removing large debris, sand, dust and debris deposited on the bottom.
Use:
- Cleaning tub bottom from debris not retained by the filter
- Removing dust, insects, sand in outdoor hot tubs
- Deep cleaning before water change
6 Aromatherapy
Beauty Luxury hot tubs can be used with specific aromatic essences for a complete wellness experience.
WARNING: It is FORBIDDEN to use traditional essential oils in the hot tub. Essential oils clog filters, form oily films on surfaces and damage the filtration system. Use ONLY non-oily liquid essences specific for hot tubs.
7 Pre-Use Routine
WARNING: It is STRONGLY RECOMMENDED to take a complete shower before entering the hot tub. This simple habit drastically reduces the amount of physical dirt carried by users into the water (sweat, dead cells, cosmetic residues, dust) and extends the effectiveness of chemical treatment and filter lifespan.
8 Dosages and Directions for Use
WARNING: All chemical product dosages are ALWAYS proportional to the hot tub water volume. Before any treatment:
- Consult your hot tub manual to know the exact capacity in liters
- Carefully read the instructions on the specific product packaging
- Calculate the correct dosage based on the actual volume
- NEVER exceed dosages
- Do not use multiple chemical products at the same time
9 Professional Use Regulations
For detailed information regarding professional public use (wellness centers, hotel spas, hospitality facilities) and specific regulatory obligations in your region, contact the competent local health authority or a specialized consultant.
10 Final Recommendations
ALWAYS use clean, potable water:
- ✓ Municipal water supply (already controlled and safe)
- ✓ Well water ONLY if analyzed and certified potable by laboratory
- ✗ NEVER water from uncontrolled natural springs
WARNING: Consistency in treatment is essential. Neglecting parameter control even for a few days can lead to bacterial proliferation, algae formation and the need for costly corrective interventions. Dedicating 10-15 minutes per week to monitoring and maintenance prevents serious problems and ensures an optimal wellness experience.
NOTE: Always consult the specific manuals included with chemical products for exact dosages, detailed directions for use and safety precautions. Read labels carefully and store products away from children and animals, in a cool, dry place.