--- title: The Pool Shark H2O Commercial Pool Chemistry Blog | Scott Trafton (3) description: Author (3) --- 855-742-7542 - - - [Login](https://app.poolsharkh2o.com) [![Pool Shark H2O - Chemical Recording and Pool Maintenance](https://blog.poolsharkh2o.com/hs-fs/hubfs/raw_assets/public/PoolSharkH2O_December2020/images/poolSharkPLogo-130x100.png?width=200&height=225&name=poolSharkPLogo-130x100.png "Pool Shark H2O - Chemical Recording and Pool Maintenance")](https://poolsharkh2o.com/) - [Home](https://poolsharkh2o.com/) - [Pool Log Book](https://poolsharkh2o.com/pool-log-book/) - [Commercial Pool Software](https://poolsharkh2o.com/commercial-pool-management-log/) - [Corporate Solutions](https://poolsharkh2o.com/commercial-pool-management-log/corporate-solutions/) - [Features](https://poolsharkh2o.com/features/) - [Pricing](https://poolsharkh2o.com/pricing/) - [Contact](https://poolsharkh2o.com/contact/) - [Blog](https://blog.poolsharkh2o.com/) - [Search](https://blog.poolsharkh2o.com/search-blogs) - [Home](https://poolsharkh2o.com/) - [Pool Log Book](https://poolsharkh2o.com/pool-log-book/) - [Commercial Pool Software](https://poolsharkh2o.com/commercial-pool-management-log/) - [Corporate Solutions](https://poolsharkh2o.com/commercial-pool-management-log/corporate-solutions/) - [Features](https://poolsharkh2o.com/features/) - [Pricing](https://poolsharkh2o.com/pricing/) - [Contact](https://poolsharkh2o.com/contact/) - [Blog](https://blog.poolsharkh2o.com/) - [Login](https://app.poolsharkh2o.com/) # The Pool Shark H2O Commercial Pool Chemistry Blog News & Updates # Search the Pool Shark H2O Blogs Our blog library has an extensive amount of articles on common issues with pool water chemistry and the most common causes of these issues. Use the search below to find an article that may help resolve your pool question. This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. If you are not finding the answer to your question, feel free to email us at [support@poolsharkh2o.com](mailto:support@poolsharkh2o.com) and we can try to help. [![How to Identify, Remove, and Prevent Stains on Pool Liners or Plaster](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/Stains%20on%20pool%20liner.png)](https://blog.poolsharkh2o.com/stains-on-pool-liner) # [How to Identify, Remove, and Prevent Stains on Pool Liners or Plaster](https://blog.poolsharkh2o.com/stains-on-pool-liner) Feb 17, 2026 When stains appear on pool liners or plaster surfaces, they typically fall into three categories: metals, organic matter, or mineral buildup. For example, iron often leaves brown or rust-colored marks, copper can create blue-green discoloration, and calcium deposits show up as white or gray scaling. Determining the source is critical before beginning treatment. Treating a metal stain like organic... [![Why Is My Pool Green? Understanding Algae, Metals, and Water Chemistry](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/Why%20Is%20My%20Pool%20Green%3F.png)](https://blog.poolsharkh2o.com/why-is-my-pool-green) # [Why Is My Pool Green? Understanding Algae, Metals, and Water Chemistry](https://blog.poolsharkh2o.com/why-is-my-pool-green) Feb 10, 2026 A green pool is never a welcome sight, but especially not for commercial, public, or community facilities. Swimmers noticeit immediately, health inspectors ask questions, and sudden closures can disrupt your operations. In other words, it’s an issue that requires your immediate attention. [![How to Calculate the Volume of a Pool (and Why It Matters for Commercial Operations)](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/Calculate%20the%20volume%20of%20a%20pool.png)](https://blog.poolsharkh2o.com/calculate-the-volume-of-a-pool) # [How to Calculate the Volume of a Pool (and Why It Matters for Commercial Operations)](https://blog.poolsharkh2o.com/calculate-the-volume-of-a-pool) Jan 27, 2026 Accurately calculating the volume of a pool is the foundation for every chemical decision you make as a pool operator. If you don’t know how much water is in the pool, you can’t reliably calculate chlorine, pH adjusters, stabilizer, or shock. And when dosing is off, even by a little, water quality and safety problems follow. [![CPO Certification: Why It Matters for Commercial & Public Pool Operators](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/CPO%20Certification.png)](https://blog.poolsharkh2o.com/cpo-certification) # [CPO Certification: Why It Matters for Commercial & Public Pool Operators](https://blog.poolsharkh2o.com/cpo-certification) Jan 20, 2026 Swimming pool management is complex. Beyond ensuring a fantastic guest experience, there are chemistry, safety, compliance, and risk considerations that keep commercial operators on their toes. The Certified Pool Operator (CPO) certification helps ensure you or someone on your staff is adequately prepared and trained to handle these complexities, as well as to guide your operations. It's the ... [![Mustard Algae in Pool Water: What Pool Operators Should Know](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/Mustard%20algae%20in%20pool.png)](https://blog.poolsharkh2o.com/mustard-algae-in-pool) # [Mustard Algae in Pool Water: What Pool Operators Should Know](https://blog.poolsharkh2o.com/mustard-algae-in-pool) Jan 14, 2026 Mustard algae in pool environments can be one of the most frustrating water quality issues commercial and public pool operators face, often returning even when pool chemistry appears to be under control. It can show up when everything else looks “within range,” then keep coming back—clinging to walls, spreading to equipment, and resisting normal sanitation routines. [![Black Algae in Pools: What Causes It and How to Eliminate It](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/black%20algae%20in%20pools.png)](https://blog.poolsharkh2o.com/black-algae-in-pools) # [Black Algae in Pools: What Causes It and How to Eliminate It](https://blog.poolsharkh2o.com/black-algae-in-pools) Jan 05, 2026 Black algae is one of the most persistent and costly issues a commercial or public pool can face. For operators responsible for maintaining safe, code-compliant pools, the appearance of dark, stubborn, spot-like growths on plaster or concrete surfaces is a sign that water chemistry, sanitation, or maintenance routines need immediate attention. [![Swimming Pool Chlorine Levels: What Commercial & Public Pool Operators Need to Know](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/Swimming%20pool%20chlorine%20levels.png)](https://blog.poolsharkh2o.com/swimming-pool-chlorine-levels) # [Swimming Pool Chlorine Levels: What Commercial & Public Pool Operators Need to Know](https://blog.poolsharkh2o.com/swimming-pool-chlorine-levels) Jan 05, 2026 For commercial and public pool operators, maintaining proper chlorine levels is a core part of guest safety, pool reputation, and a regulatory requirement. Whether you manage a municipal facility, a hotel pool, a fitness center, or a multi-pool aquatic complex, the chemistry behind your water management program directly affects bather health, equipment lifespan, operational costs, and your... [![How to Shock a Saltwater Pool: Guidance for Commercial and Public Pool Operators](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/how%20to%20shock%20a%20saltwater%20pool.png)](https://blog.poolsharkh2o.com/how-to-shock-a-saltwater-pool) # [How to Shock a Saltwater Pool: Guidance for Commercial and Public Pool Operators](https://blog.poolsharkh2o.com/how-to-shock-a-saltwater-pool) Jan 05, 2026 Saltwater pools are often misunderstood as “low maintenance,” but commercial and public facilities know better. While salt chlorine generators (SCGs) produce a steady chlorine residual, which can improve chlorine consistency, they do not eliminate the need for shocking. In high-bather, regulated environments, shock treatment remains a critical operational tool for restoring water quality,... [![What is a Saltwater Pool? An Explainer for Commercial and Public Pools](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/what%20is%20a%20saltwater%20pool.png)](https://blog.poolsharkh2o.com/what-is-a-salt-water-pool) # [What is a Saltwater Pool? An Explainer for Commercial and Public Pools](https://blog.poolsharkh2o.com/what-is-a-salt-water-pool) Jan 05, 2026 Inside this Blog: How saltwater pools use chlorine How much salt is in a saltwater pool? Why many facilities choose saltwater systems What kind of maintenance do saltwater pools have? Who should consider a saltwater pool? Is a saltwater pool right for your facility? Frequently Asked Questions (FAQs) about saltwater pools [![Swimming Pool Chlorine Types: the Pros and Cons of Each](https://blog.poolsharkh2o.com/hubfs/Blog%20Images/swimming%20pool%20chlorine%20types.png)](https://blog.poolsharkh2o.com/swimming-pool-chlorine-types) # [Swimming Pool Chlorine Types: the Pros and Cons of Each](https://blog.poolsharkh2o.com/swimming-pool-chlorine-types) Nov 13, 2025 Summary: Commercial and public pools rely on chlorine for safe water, but each chlorine type—stabilized solids, liquid chlorine, cal hypo, and salt-chlorination systems—has distinct pros, cons, and operational impacts. Choosing the right one affects water quality, maintenance demands, cost, staff workload, and guest experience. This guide explains how each option performs in high-use aquatic... 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