Keeping your hot tub water clean, safe, and balanced is essential—whether you own an inflatable spa or a permanent hard-shell model. But when it comes to choosing the right chemical pack, the type of hot tub you have plays a big role in what products will work best. Let’s explore the key differences and help you choose the right chemical pack for your specific setup.

Understand the Differences Between Inflatable and Hard-Shell Hot Tubs

Inflatable hot tubs are typically smaller, more portable, and made of durable vinyl or PVC. They’re ideal for temporary use or limited spaces, but they also require a bit more attention when it comes to water chemistry due to their materials and lower insulation.

Hard-shell hot tubs, on the other hand, are built for longevity and comfort. They’re equipped with more robust filtration systems, insulation, and advanced features like built-in ozonators or saltwater systems. Their larger water capacity and sturdy construction allow for more chemical stability, but they also require a broader range of care products.

Choosing the Right Chemical Pack for Inflatable Hot Tubs

For inflatable hot tubs, simplicity is key. Look for starter chemical packs that include:

• Chlorine or bromine granules (not tablets, as floaters can damage soft walls)

• pH increaser and decreaser

• Alkalinity adjuster

• Test strips

• Foam reducer and water clarifier

Inflatable tubs are more sensitive to chemical changes due to lower water volume, so testing the water every few days is crucial. Avoid heavy-duty products designed for larger tubs—they may be too strong and can degrade the liner or cause irritation.

Also, since inflatable spas don’t always have strong filtration systems, enzyme-based cleaners can help prevent buildup and extend water life between changes.

Choosing the Right Chemical Pack for Hard-Shell Hot Tubs

Hard-shell tubs typically require a more comprehensive chemical kit. Look for packs that include:

• Chlorine or bromine tablets (used in a floating dispenser or in-line feeder)

• pH and alkalinity balancers

• Calcium hardness increaser

• Shock oxidizer

• Stain and scale control

• Water test kit (liquid or digital for accuracy)

Because hard-shell hot tubs often stay filled for longer periods, maintenance is about long-term balance. Calcium hardness, for example, is crucial to prevent damage to plumbing and surfaces. A good chemical pack should support ongoing care with detailed instructions and dosages based on water volume.

Conclusion

No matter which type of hot tub you own, always read labels carefully and follow dosing guidelines. Choose a chemical pack designed for your tub’s material and size. With the right products, you’ll keep your water clean, clear, and spa-ready all season long.