For the first week, keep the same concentration of chlorine as you normally use, but stop using all other products. What’s most important is to maintain alkalinity and pH levels within the recommended ranges (alkalinity: 80–120 ppm [mg/L] / pH: 7.2–7.8). Two days after you stop using other products, backwash the pool and pour the first weekly dose of CRYSTALLINE H2O into the skimmer. Over the next two weeks, monitor the concentration of chlorine as it gradually decreases to a minimum of 0.8 ppm (mg/L). Once the water is balanced, you shouldn’t need any chemical products other than CRYSTALLINE H2O and a bit of chlorine to maintain a concentration of at least 0.8 ppm (mg/L).

The filtration and circulation systems must be in good condition. You will need to use a superchlorination treatment (shock treatment) and vacuum the pool. Make sure the water’s alkalinity level is between 80 and 120 ppm. Once the water is clear and clean, you can balance the pH (between 7.2 and 7.8) and pour the first weekly dose of CRYSTALLINE H2O into the skimmer. Dilute a second dose in hot water, and then distribute it throughout the pool. At that point, the concentration of chlorine should be relatively high (1.5 ppm). Let it gradually decrease to 0.8 ppm (mg/L) and keep it no lower than that level all season long. A double dose is only required when opening and closing your pool.

Chlorine should be added as often as needed. However, remember that when using CRYSTALLINE H2O, the ideal chlorine concentration is only 0.8 ppm (mg/L), so you’ll need to add much less chlorine than before. What’s more, thanks to CRYSTALLINE H2O’s stability, it’s easier to maintain the concentration of chlorine at the recommended level.

For a residential pool, the most practical way to check the concentration of chlorine in the water is to use an inexpensive test kit available at hardware and pool stores. Make sure to buy new testing solution every year, as it can lose effectiveness over time. Another popular way to measure the concentration of chlorine is to use test strips that you dip in the water.

Yes, CRYSTALLINE H2O is perfectly compatible with all types of chlorine. However, you don’t need to use stabilized chlorine, which is usually more expensive. All you have to do is make sure the concentration of chlorine in the water stays at a minimum of 0.8 ppm (mg/L). The quantity of chlorine required to reach a concentration of 0.8 ppm will vary depending on the type of chlorine used (liquid, granular or solid). If using solid chlorine pucks with an automatic chlorinator, simply adjust the flow to 0.8, which is close to the minimum flow rate.

Yes, all you have to do is double the regular dose of CRYSTALLINE H2O before you go, and our product will help keep your water clean for up to two weeks without the need to add anything else.

Yes, CRYSTALLINE H2O is perfectly compatible with bromine and any other similar disinfectant. One of the main functions of our product is to maximize the disinfectant’s effectiveness while using less of it. Bacteria are therefore successfully destroyed before they can spread.

When used in “normal” water (alkalinity between 80 and 120 ppm), CRYSTALLINE H2O will maintain the pH level between 7.2 and 7.8 in most cases. The effectiveness of our product does not really depend on pH variations. However, it is a good habit to regularly check the pH level: if it’s too low, the water will become corrosive, and pH that is too high will cause scaling and leave deposits in the water.

No, CRYSTALLINE H2O cannot regulate alkalinity levels. Our product does many things, but like other pool water maintenance methods, this is not one of its functions. Our product will not work properly in unbalanced water. To achieve the desired results, the alkalinity of the water should be at a normal level. We recommend adjusting the balance of chemicals in your pool at the very start of the season. Certain conditions or events like acid rain or frequent refilling with unbalanced water will of course affect the alkalinity of your pool water. That’s why it’s a good idea to check the levels every week, and make adjustments as necessary. Note: No matter what maintenance method you use for your pool, no product, including chlorine, will achieve proper results in unbalanced water. A normal alkalinity level is between 80 and 120 ppm (mg/L).

YES, absolutely! One of the ingredients in the CRYSTALLINE H2O formula is a powerful algicide that eliminates algae at the source. Using the recommended amount of the product in normal water conditions means your pool will always be free of algae. And with no algae, you’ll need even less chlorine to keep your water clear and clean.