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NSF/ANSI Standard 50 and the MAHC

Commercial Pool Chemicals must be NSF Certified or EPA Registered

"New: Specifies that numerous pool chemicals (stabilizers, pool-grade salt, clarifiers, flocculants,...

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How to Reduce Cyanuric Acid (CYA) in a Swimming Pool

High levels of Cyanuric Acid (CYA) in pool water can cause issues. That's why Minimal CYA is Orenda's Fourth Pillar of Proactive Pool Care.

And yet, we encounter many people that are hesitant to drain—or even dilute—their pool to reduce CYA levels. Perhaps there are valid reasons—costs, structural risks, labor, environmental concerns—for not draining high CYA pool water. That being said, draining and/or diluting water is still the most economical way to lower CYA levels in a pool.

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Leave It Better Than You Found It

My grandfather has a few rules that go unquestioned and are universally obeyed. One of them is "leave it better than you found it." It could mean the bedroom I'm staying in at their home...or the kitchen after I eat lunch. It also applies to borrowing tools, the car, the tractor, or anything else that does not belong to me. Leave (or return) it better than you found it. A profoundly simple rule to remind us to respect others and their property.

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Nitrates, Nitrites and Urea in Swimming Pools

Nitrates, Nitrites and other Ammonia-based compounds can be confusing. This article is our attempt to simplify the science and explain why these things matter. If you're looking for a high-level chemistry lesson, this is not the article for you. But feel free to read some of our sources to get your fix: the CDC, NIH, ScienceDirect, and peer reviewed studies like this and this.

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CYA overstabilization-2

Over-stabilization Explained

Over-stabilization, Explained

Simply put, over-stabilization occurs when too much cyanuric acid is added to pool water.  Over-stabilization is a problem because cyanuric acid (CYA) can slow down chlorine’s ability to kill pathogens and algae.  To explain this, you need to know that hypochlorous acid (HOCl) is the active form of chlorine in pools.  The concentration of HOCl is affected by both the pH and the CYA concentration.  Figure 1 shows the well-known relationship between pH and HOCl.

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How to install a feed pump on a swimming pool

Automating chemical feeds in swimming pools is almost always a good idea. Orenda products are no different. This is a step-by-step guide with a video to walk you through how to install a feed pump on a swimming pool.

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Four Things to do When you Open a Pool with Crystals in it

What are you going to do if you remove a winter pool cover and find calcium crystals in the pool? If you have encountered the winter crystals in the past--and you may have thought it was 'scale'--what did you do in the past? Did it work? This article will outline four things Orenda recommends if you are trying to open a pool with crystals in it.

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LSI First. Range Chemistry Second.

What if range chemistry is the wrong thing to focus on when managing water? What if the ranges do not always apply, like in the winter? Theoretically, the textbook ranges for chemistry are ideal. But in reality, that's not always the case. In this article we will explain why we prioritize the Langelier Saturation Index (LSI) first, and range chemistry after that.

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