Leisure Time Spa Up spa alkalinity increaser 2 lb, 4‑pack — slow‑acting granular formula for balanced hot tub water

Leisure Time Spa Up is a concentrated granular formula designed to raise and stabilize total alkalinity in spas and hot tubs for more comfortable, balanced water.

Keeping total alkalinity in the recommended range helps prevent rapid pH swings and protects both equipment and bathers. Leisure Time Spa Up delivers a controlled, slow-acting alkalinity increase so you can fine-tune water balance without overshooting. Each 2-pound container in this 4-pack provides an economical supply for routine maintenance of home spas, portable hot tubs, and small commercial tubs.

How quickly will Spa Up change my spa’s alkalinity?

Spa Up is a concentrated granular treatment formulated to dissolve and raise alkalinity gradually rather than in a single, abrupt jump. That slower action makes it easier to test and adjust without causing pH bounce. Expect incremental increases over several hours; always retest before adding more product.

• Add small doses and allow circulation for 2–4 hours before retesting.
• Typical target range: 80–120 ppm total alkalinity.
• Works with chlorine, bromine, ozone, and biguanide sanitizer systems.

How do I apply Spa Up safely in my hot tub?

Measure the current total alkalinity with reliable test strips or a test kit and calculate the required dose. With circulation running, broadcast Spa Up around the perimeter or dissolve it in a bucket of water first for very small tubs, then add slowly. Avoid adding other water chemistry products at the same moment to prevent interactions.

• Test before adding: know your starting ppm.
• Add product in small increments, circulate, and retest.
• Keep bather use suspended until readings are stable and safe.

Will Spa Up interfere with my sanitizer or equipment?

Spa Up is designed to be compatible with common spa sanitizers and systems, including chlorine, bromine, ozone, and biguanide. Used as directed, it helps stabilize pH indirectly by holding alkalinity steady, which reduces stress on control equipment and surface finishes. Avoid combining with other granular chemicals at the same time to prevent localized concentrations.

• Compatible with most sanitizers: chlorine, bromine, ozone, biguanide.
• Helps reduce pH bounce that can stress heaters and surfaces.
• Do not mix undissolved chemicals together directly.

Who this product is for: Leisure Time Spa Up is intended for spa and hot tub owners who want a straightforward, economical way to maintain total alkalinity within the recommended 80–120 ppm range. It’s well suited to homeowners, seasonal property managers, and small commercial operators who prefer granular, controlled dosing to protect finishes, extend equipment life, and keep water comfortable for users. If you already use Leisure Time or other Sigura family products like HTH or GLB, Spa Up integrates easily into an established water-care routine.

Usage tips: store containers dry and sealed, follow label directions for dosing, and always retest water after circulation. For persistent imbalance issues, review total dissolved solids, calcium hardness, and sanitizer routine as part of a full maintenance check.