When enjoying the pleasure of swimming, every swimmer is concerned about the swimming pool water quality. A safe and healthy swimming environment cannot be divorced from careful pool maintenance. Sodium dichloroisocyanurate and calcium hypochlorite, as two commonly used disinfectants, play an important role in swimming pool hygiene. So which is better? This article will help a lot.
What is SDIC?
Sodium dichloroisocyanurate (SDIC or NaDCC), a chemical commonly used in swimming pool maintenance, has a high solubility. When added to pool water, SDIC Chemical can dissolve quickly and release chlorine, thus effectively killing harmful bacteria, viruses and algae. This has a significant impact on improving the pool water quality.
What is Cal Hypo?
Calcium Hypochlorite, or Cal Hypo, is an inorganic compound often used as a disinfectant and bleach. Cal Hypo was synthesized in 1799, making it one of the most commonly used disinfectants in swimming pools. However, SDIC and TCCA were synthesized in the early 20th century.
Advantages of SDIC and Cal Hypo
SDIC is a stabilized chlorine that can be hydrolyzed to cyanuric acid (CYA), preventing the chlorine in pool water from being destroyed by UV rays. Also, SDIC disinfectants have a long shelf life and will remain effective when stored in dry conditions for two years or more. More importantly, the use of SDIC in swimming pools has little effect on pH levels. If you have a higher requirement for the stability and durability of the disinfectant, or the disinfectant can have a certain algae-killing effect, then SDIC may be more suitable. Its efficient sterilization, good stability and ability to inhibit algae growth can ensure the long-term stability of swimming pool water quality.
Compared with SDIC, Cal Hypo is an unstabilized chlorine, and CYA is required when used in outdoor pools, but that doesn't affect that Cal Hypo is a pool chemical with excellent performance. If there is a more serious water quality problem that needs to be quickly solved, and there is a high CYA level, Cal Hypo may be a good choice for shock treatment. However, it has the one major drawback, that is, it contains insoluble matter, which can not be directly dissolved into the pool water.
From the above we can see that SDIC and Cal Hypo are both excellent disinfectants. The question of which is better depends on local habits. For example, SDIC chemicals are mostly used in local area, so SDIC will be the mainstream product used for pool disinfection. And vice versa. But this is for the average user, as for a skilled pool owner, it's a piece of cake.
All in all, whether you use SDIC or Cal Hypo, it is important to make a full assessment of the situation. You can consult a professional pool manager or water treatment specialist before using to make sure that the suitable disinfectant is chosen and used. And if you are in need of Swimming Pool Chemicals, please feel free to contact us.