Haviland Durachlor Chlorine Tabs

These tablets are stabilized, meaning they contain cyanuric acid to protect the chlorine from being broken down by the sun's UV rays. This allows the chlorine to remain active in your pool water for a longer period, reducing the need for constant re-dosing.

It is generally recommended to use an automatic chlorinator or a floating dispenser for these tablets. Placing them directly into the skimmer can cause highly concentrated chlorine to sit against your pool's plumbing and equipment, which may lead to corrosion or damage over time.

Because these are slow-dissolving, the lifespan depends on your pool's water flow, temperature, and sun exposure. Typically, you will need to check your dispenser weekly and add new tablets as the existing ones dissolve to maintain consistent sanitizer levels.

Yes, these stabilized chlorine tablets are suitable for most standard pool surfaces, including vinyl, plaster, and fiberglass. However, always ensure the tablets are fully dissolved in your dispenser and not resting directly on the pool floor to prevent potential bleaching or staining.

Since these tablets are already stabilized, you likely won't need to add extra cyanuric acid unless your current levels are very low. It is best to test your water chemistry regularly to ensure your stabilizer levels remain within the ideal range of 30-50 ppm.