Diamond pH Hold – One-Dose Spa pH Stabilizer (32 oz.)

Help Reduce Repeated pH Adjustments After a Fresh Spa Fill

Diamond pH Hold is a one-dose spa-water treatment designed to help control fluctuating pH after filling or refilling a hot tub. By helping reduce pH drift, it can make routine water balancing more manageable throughout the life of the spa water.

Proper pH is important for bather comfort, sanitizer performance, water clarity, and the protection of spa surfaces and equipment. However, aeration, source-water chemistry, total alkalinity, sanitizer use, chemical additions, and bather load can all cause the pH to move over time.

Diamond pH Hold is used once during the fresh-fill process rather than as a weekly maintenance chemical. The front label directs the user to apply one dose each time the spa is filled.

Important: Diamond pH Hold does not sanitize or oxidize the water, and it does not eliminate the need to test pH and total alkalinity regularly. Occasional adjustments may still be required.

🔹 Key Benefits

• Helps reduce fluctuating spa-water pH
• May reduce the need for repeated pH corrections
• Designed for use during the fresh-fill process
• One-dose application at each spa fill
• Helps make ongoing water balancing more manageable
• Supports more consistent water chemistry
• Helps maintain conditions needed for proper sanitizer performance
• Convenient liquid formula
• Easy to add according to the physical bottle
• Intended specifically for spas and hot tubs
• Useful for new-spa startups and routine drain-and-refill maintenance
• 32-fluid-ounce bottle provides one standard fresh-fill treatment when used at the listed 300–500-gallon dosage

📋 How to Use

Always follow the directions, starting water ranges, dosage, circulation time, warnings, and safety precautions printed on the current physical bottle. The rear label takes priority over generalized online guidance.

Before Application

1. Fill the spa with fresh water.
2. Determine the spa’s actual water capacity.
3. Test the pH and total alkalinity.
4. Test calcium hardness and source-water metals when applicable.
5. Adjust the starting water chemistry in the sequence and ranges specified on the Diamond pH Hold label.
6. Confirm that the product is approved for the spa surface and sanitation system.
7. Make sure the circulation and filtration systems are operating properly.

Application

1. Shake the bottle if directed by the current label.
2. Measure the amount required for the spa’s actual capacity.
3. If confirmed by the rear label, use one 32-fluid-ounce bottle for a spa containing approximately 300–500 gallons.
4. Add the product directly to the spa water at the location specified on the label.
5. Operate the circulation system or jets for the amount of time directed on the bottle.
6. Do not mix Diamond pH Hold directly with another concentrated chemical.
7. Add each water-care product separately and allow adequate circulation between treatments.
8. Retest the pH and total alkalinity after the product has circulated.
9. Make any remaining adjustments required by the spa manufacturer and sanitation system.
10. Establish and maintain the required sanitizer level before using the spa.

Spa Capacity	Application Guidance
Under 300 gallons	Follow the current bottle; do not assume that a proportional dose is permitted
300–500 gallons	One quart / 32 fl. oz. if confirmed by the rear label
Over 500 gallons	Follow the current bottle or contact Southern Leisure for assistance
Swim spas	Use only when permitted by the product label and swim-spa manufacturer

Do not add another dose as part of weekly maintenance. The front label identifies pH Hold as a one-dose treatment used each time the spa is filled.

Continue testing the spa water regularly. “One dose per fill” does not mean that pH, alkalinity, sanitizer, or other water-care readings can be ignored until the next water change.

💬 Southern Leisure Says

Diamond pH Hold is intended for the spa owner who feels like the pH is constantly moving after a fresh fill. It helps reduce that drift so the water can be easier to maintain.

The most important word is hold. This product is designed to help stabilize properly prepared water; it does not replace testing or automatically correct every underlying water-balance problem.

Start with accurate testing, follow the rear-label startup sequence, add the correct amount, and continue monitoring the water throughout the fill cycle.

🧼 Care & Maintenance

• Keep the product in its original labeled container.
• Keep the cap tightly closed when not in use.
• Store the bottle upright in a cool, dry location.
• Protect the product from freezing.
• Avoid prolonged exposure to direct sunlight and excessive heat.
• Shake before use only when directed by the label.
• Use a clean chemical-measuring device when a partial amount is authorized.
• Do not pour unused product back into the bottle.
• Never mix concentrated spa chemicals together.
• Add each water-care product separately.
• Wipe up spills promptly.
• Follow all handling and first-aid instructions on the container.
• Keep out of reach of children and pets.

📌 Product Quick Facts

• Product: Diamond pH Hold
• Product type: Spa-water pH stabilizer
• Primary purpose: Helps reduce fluctuating pH
• Application: One-dose fresh-fill treatment
• Formula: Liquid
• Net contents: 1 quart / 32 fluid ounces
• Listed dosage: One quart per approximately 300–500 gallons, subject to rear-label confirmation
• Treatment frequency: Each time the spa is filled
• Weekly maintenance treatment: No
• Sanitizer: No
• Oxidizer: No
• pH increaser or decreaser: No; separate adjustment may still be required
• Testing still required: Yes
• Manufacturer: N. Jonas & Co., Inc.

⚙️ Specifications

Brand	Diamond
Product Name	pH Hold
Manufacturer	N. Jonas & Co., Inc.
Product Type	Spa-water pH stabilizer
Formula	Liquid
Net Contents	1 quart / 32 fl. oz. / approximately 946 mL
Primary Purpose	Helps reduce fluctuating pH and repeated adjustments
Application	Fresh-fill treatment
Listed Dosage	One quart per approximately 300–500 gallons; verify against the current rear label
Treatment Frequency	One dose each time the spa is filled
Starting Water Requirements	Follow the pH and total-alkalinity ranges printed on the current bottle
Sanitizer Compatibility	Confirm on the current bottle and sanitation-system instructions
Suitable Spa Surfaces	Confirm on the current bottle and spa manufacturer’s instructions
Sanitizes Water	No
Oxidizes Organic Waste	No
Eliminates Future Testing	No
Storage	Store upright with the cap closed; protect from freezing and excessive heat
Quantity	One 32-fluid-ounce bottle

❓ Frequently Asked Questions

What does Diamond pH Hold do?

It is designed to help control fluctuating pH after filling or refilling a spa, reducing the need for repeated corrections.

Does it raise or lower the pH?

Its primary purpose is pH stabilization. It should not be treated as a substitute for a dedicated pH increaser or pH decreaser. Adjust the starting water according to the physical bottle.

How much should I use?

Available information for the corresponding P33001 product specifies one quart per approximately 300–500 gallons. Confirm the amount on the current Diamond rear label before use.

Can I use a partial bottle in a smaller spa?

Only if the current rear label provides a proportional dosage. Do not create a partial dose based solely on an online calculation.

How often should I add it?

The front label states that one dose should be used each time the spa is filled. It is not presented as a weekly maintenance treatment.

Will it eliminate every future pH adjustment?

No guarantee should be made. Aeration, alkalinity, source water, sanitizer use, bather load, and other chemical additions can still affect pH.

Do I still need to test the water?

Yes. Continue testing pH, total alkalinity, sanitizer, and the other readings required by the spa’s water-care system.

Should I balance total alkalinity first?

Follow the starting ranges and sequence printed on the current bottle. Total alkalinity strongly influences pH stability, but the exact application sequence should not be assumed without the rear-label directions.

Can I use it with chlorine or bromine?

Confirm compatibility on the current Diamond bottle. Do not claim universal chlorine or bromine compatibility based solely on information for another brand or formulation.

Can I use it with FROG @ease?

Use it only when permitted by both the Diamond pH Hold label and the instructions for the exact FROG @ease system. It does not replace SmartChlor cartridges, mineral cartridges, FROG test strips, or normal startup balancing.

Can I use it in a swim spa?

Only when permitted by the product label and swim-spa manufacturer. A swim spa may contain substantially more than 500 gallons, so do not assume that one bottle provides the correct treatment.

Does it sanitize the spa?

No. A separately approved sanitizer must be established and maintained.

Is it a shock or oxidizer?

No. Continue using the shock or oxidation procedure required by the spa’s sanitation system.

Why does my pH keep rising after treatment?

Possible causes include excessive aeration, elevated total alkalinity, source-water conditions, chemical additions, and the sanitation system’s normal effect on pH.

Why does my pH keep falling?

Possible causes include low total alkalinity, acidic chemical additions, source-water conditions, heavy bather load, and certain sanitizer programs.

🛡️ Why Buy From Southern Leisure?

• Specialty fresh-fill treatment for fluctuating spa-water pH
• Trusted by spa owners since 2013
• Personally recommended by an experienced hot-tub service team
• Practical fresh-fill water-balancing guidance
• Help calculating the correct amount for your spa
• Support selecting compatible water-care products
• Carefully packaged for dependable delivery
• Local pickup available for Dallas–Fort Worth customers

📦 Shipping & Pickup

• Ships as one 32-fluid-ounce bottle
• Shipping available throughout the continental United States
• Local pickup available at Southern Leisure Spas & Wellness
• Most in-stock orders ship within one to two business days
• Available shipping methods and charges are displayed at checkout
• Chemical products may be subject to carrier and destination restrictions
• This product cannot be shipped to Alaska, Hawaii, Canada, or international destinations