Det anbefales å vente minst 30–60 minutter, samtidig som man slår på sirkulasjonssystemet for å sikre grundig blanding av vannet. Hvis vannvolumet er stort eller saltsyre brukes, bør intervallet forlenges til 2 timer.Kan pH-verdien justeres og klorering tilsettes samtidig på samme dag?Ja, men det må gjøres på forskjellige tidspunkter.
For eksempel:
• Tilsett syre for å justere pH-verdien om morgenen;
• Tilsett klor for desinfeksjon om kvelden.
Dette sikrer kjemikaliesikkerhet og forbedrer vedlikeholdseffektiviteten.
Kan jeg blande og fortynne syre og klor før jeg tilsetter det i vannet?
Absolutt ikke. Å blande syre og klor direkte vil umiddelbart frigjøre klorgass, som er svært giftig.
Fortynn og tilsett alltid klor separat.
Kan jeg tilsette klor hvis pH-verdien er for lav?
Ikke anbefalt.
Ved pH under 7,0 er klor for oksiderende og kan irritere hud og øyne, og akselerere korrosjon av metalldeler.
Juster pH-verdien til normalområdet før desinfeksjon.
Må jeg lukke lokket på svømmespaet etter at jeg har tilsatt syre eller klor?
Ikke lukk lokket rett før kjemikaliene er helt blandet.
Gass kan frigjøres under reaksjonen; hvis lokket er lukket, kan det forårsake gassoppbygging, korrosjon eller ubehagelig lukt.
Vent minst 30 minutter før du lukker lokket.
Systematiske metoder for å opprettholde stabil vannkvalitet i et svømmespa-boblebad
• Test vannkvaliteten 3 ganger i uken (spesielt pH og klorkonsentrasjon)
• Oppretthold pH mellom 7,2 og 7,6, og alkalitet mellom 80 og 120 ppm.
• Kjør sirkulasjonssystemet i minst 2 timer daglig for å sikre jevn fordeling av kjemikaliene.
• Skift ut en del av vannet med jevne mellomrom (25–50 % anbefales hver 2.–3. måned).
• Bruk kjemikalier av høy kvalitet for å unngå at urenheter påvirker vannbalansen.
• Følg prinsippene for sikker dosering: syre først, deretter klor, bland av og til.
Hvordan håndterer LOVIA SPA kostnadskontroll for å tilby lave priser?
LOVIA SPA oppnår lave priser uten at det går på bekostning av kvaliteten ved å optimalisere innkjøp i forsyningskjeden, bruke egen produksjon og investere i moderne automatisering. Våre langsiktige partnerskap med komponentleverandører reduserer kostnadssvingninger og sikrer stabile priser for våre kjøpere. Vi produserer alle større deler internt og unngår risikoen ved outsourcing. Som et resultat kan kundene kjøpe direkte fra fabrikken til engrospris med garantert kvalitet.
However, if chlorine is added before acid, the acidic reaction will temporarily make the chlorine overactive, leading to rapid decomposition and shortening its effective time.
3. The order of adding acid and chlorine affects water balance and stability
Acids adjust pH, while chlorine releases alkaline byproducts in the water (such as hydroxide ions formed from sodium hypochlorite).
If you add chlorine before acid, the acid will neutralize the alkaline effect of chlorine, causing chemical consumption and fluctuations, wasting chemicals, and reducing water quality stability.
Conclusion: Incorrect order leads to two problems—safety risks and wasted chemicals.
What is the correct order of adding chemicals to a swim spa hot tub?
Correct order: Add acid first, wait for the water to fully mix and circulate, then add chlorine.
Specific steps are as follows:
1. Check water quality parameters
• Use a pH and residual chlorine meter or test strips to check the current values.
• If pH > 7.6, add acid first.
• If pH is between 7.2 and 7.4 and chlorine is low, chlorine can be added directly.
2. Add acid (pH adjuster)
• Turn off the jet system and turn on the circulation pump.
• Slowly add the diluted acid to the water.
• Wait at least 30–60 minutes to allow the water to mix completely and circulate.
• Check the pH again to ensure it is stable between 7.2 and 7.6.
3. Add chlorine (disinfectant)
• Do this only after the acid is completely diluted.
• Keep the water circulating for at least 30 minutes after adding chlorine.
• Ensure the residual chlorine concentration is 1.5–3 ppm, avoiding levels that are too high or too low.
Never add acid and chlorine simultaneously, either at the same time or in the same area!
Why add acid first?
1. Acid creates an ideal environment for the effective action of chlorine
The bactericidal effect of chlorine depends on the proportion of hypochlorous acid (HOCl), which has a higher concentration at lower pH levels.
Adding acid first lowers the water pH to the ideal range, ensuring the chlorine's bactericidal ability is maximized.
For example:
pH value | Hypochlorous acid (HOCl) percentage | Sterilization efficiency |
| 7.0 | 75% | High |
| 7.4 | 63% | Moderate (optimal balance) |
| 8.0 | 22% | Low |
Therefore, adding acid before chlorine allows the chlorine to exert its maximum bactericidal effect.
2. Adding acid first avoids chemical conflicts
If chlorine is added first, followed by acid, the acid will directly react with the undiluted hypochlorite, producing chlorine gas.
Conversely, if acid is added first and then mixed, it is diluted and no longer directly contacts the chlorine, greatly reducing the chemical risk.
3. Controlling pH before disinfection is a scientifically sound maintenance principle
The logical order of water quality management should be:
• First adjust the water's "state" (pH and alkalinity), then perform "treatment" (chlorination).
• If the pH is not within a reasonable range, adding more chlorine may be ineffective.
The impact of different forms of chlorine and acid on the order of addition
1. Granular chlorine (Dichlor/Cal-Hypo)
Granular chlorine usually dissolves slowly and releases chlorine while being alkaline.
→ Acid should be added first, and chlorine added only after the pH has stabilized.
2. Liquid chlorine (Sodium Hypochlorite)
Liquid chlorine is more alkaline and significantly raises the pH.
→ Adding acid first is more important; otherwise, the pH may rise rapidly.
3. Stable chlorine tablets (Trichlor)
Trichlor is acidic but dissolves slowly.
→ If using an automatic chlorine tablet dispenser, the system can maintain a neutral pH during operation, eliminating the need for additional acid adjustment.
4. Sodium Bisulfate vs. Muriatic Acid
Muriatic acid acts quickly; wait at least 1 hour after adding it before adding chlorine.
Sodium Bisulfate acts mildly; wait 30 minutes before adding chlorine.
Regardless of the combination, follow the principle of "acid first, then chlorine" + "interval circulation".
What happens if the order is reversed?
Many beginners accidentally reverse the process when maintaining a swim spa hot tub, leading to the following problems:
• Chemical reaction releasing chlorine gas: Acid reacts immediately with undiluted chlorine, releasing an irritating gas.
• Drastic pH fluctuations: Adding chlorine before acid causes an acid-base neutralization reaction, making the pH unstable and difficult to control in a short period.
• Chlorine efficiency drops drastically: Acid directly destroys the molecular structure of chlorine, causing it to be consumed before it can be sterilized.
• Accelerated equipment corrosion: The simultaneous presence of strong acid and high chlorine in an environment causes severe corrosion to nozzles, heating elements, and pipes.
• Water becomes cloudy or develops an odor: Byproducts of the chemical reaction can lead to the formation of chloramines, giving the water a pungent odor.
Therefore, in case of misoperation, the circulation system should be turned on immediately and residual chlorine and pH should be checked. If necessary, a portion of the water should be replaced.
How long should the interval be between acid and chlorine?
It is recommended to wait at least 30–60 minutes, while simultaneously turning on the circulation system to ensure thorough mixing of the water. If the water volume is large or hydrochloric acid is used, the interval should be extended to 2 hours.
Can pH be adjusted and chlorination be added simultaneously on the same day?
Yes, but it must be done at different times.
For example:
• Add acid to adjust the pH in the morning;
• Add chlorine for disinfection in the evening.
This ensures chemical safety and improves maintenance efficiency.
Can I mix and dilute acid and chlorine before adding it to the water?
Absolutely not. Mixing acid and chlorine directly will immediately release chlorine gas, which is highly toxic.
Always dilute and add chlorine separately.
Can I add chlorine if the pH is too low?
Not recommended.
At pH below 7.0, chlorine is too oxidizing and may irritate skin and eyes, and accelerate corrosion of metal parts.
Adjust the pH to the normal range before disinfection.
Do I need to close the swim spa hot tub lid after adding acid or chlorine?
Do not close the lid immediately before the chemicals are completely mixed.
Gas may be released during the reaction; if the lid is closed, it can cause gas buildup, corrosion, or unpleasant odors.
Wait at least 30 minutes before closing the lid.
Systematic methods for maintaining stable water quality in a swim spa hot tub
• Test water quality 3 times a week (especially pH and chlorine concentration)
• Maintain pH between 7.2 and 7.6, and alkalinity between 80 and 120 ppm.
• Run the circulation system for at least 2 hours daily to ensure even distribution of the chemicals.
• Replace a portion of the water periodically (25-50% recommended every 2-3 months).
• Use high-quality chemicals to avoid impurities affecting the water balance.
• Follow safe dosing principles: acid first, then chlorine, mixing intermittently.
How does LOVIA SPA manage cost control to offer low prices?
LOVIA SPA achieves low prices without compromising quality by optimizing supply chain sourcing, using in-house production, and investing in modern automation. Our long-term partnerships with component suppliers reduce cost fluctuations and ensure stable prices for our buyers. We manufacture every major part internally, avoiding outsourcing risks. As a result, customers can buy directly from the factory at wholesale cost with guaranteed quality.
