Big Industry News: HASA Buys Bio-Dex

Hasa’s acquisition of Biodex matters to pool service pros because it preserves a long-standing chemical line and puts it under a larger manufacturer with broader distribution. Biodex has been making pool chemicals since the 1960s, and the big win here is consistency: you get proven formulations that many technicians have relied on for decades, plus the likelihood of better availability through suppliers. For anyone searching for “best pool chemicals for service routes,” “pool stain remover,” or “acid wash additive,” this conversation highlights a practical, field-tested approach: pick a few products that reliably solve common problems, then learn the exact handling, dosing, and water-balance conditions that make them work.  

A key tool discussed is Biodex Plaster White and Bright, an acid wash additive designed to improve how the acid solution behaves on plaster. In a traditional acid wash, an acid and water mix can sheet off quickly, reducing contact time and making coverage uneven. White and Bright thickens the mixture into a slow-moving, syrupy consistency that coats plaster more evenly, brightens the surface, and can reduce harsh fumes during application. The practical ratio shared is one gallon of acid to two gallons of water, with about eight ounces of White and Bright added to a five-gallon bucket. For many jobs, a quart of product is enough, which is useful for techs who only do occasional acid washes. This is a strong SEO match for “how to acid wash a pool safely” and “acid wash plaster brightener,” because the real takeaway is that better dwell time and better coverage often beat simply using more acid.  

The episode also spotlights Biodex Aquadex 50 Stain Off as a go-to pool stain remover, especially for early-stage stains. A memorable example comes from an avoidable issue: adding certain retail salt products that contain anti-caking additives can trigger yellow streak staining, even on new plaster. The method described is turning off circulation, pouring the stain remover directly over the affected area so it can settle, then brushing thoroughly and repeating if needed. The discussion also adds the nuance many “miracle stain remover” posts ignore: stain treatments can reduce free chlorine, sometimes to zero, so overdosing creates a second problem that takes time to correct. For best results, water chemistry matters, particularly pH, with 7.2 called out as more effective than 7.8. That combination of technique plus balance guidance is exactly what pool pros look for when searching “remove metal stains pool,” “organic stain plaster,” and “why did my chlorine drop after stain treatment.”  

From there, the focus shifts to tile cleaning and the risks that come with powerful products. Biodex 300 Tile Cleaner is described as highly effective because it contains multiple acids, making it strong against calcium scale and waterline buildup. That same strength is why it demands careful handling: gloves, spill control, and awareness of water level are critical, since exposed plaster can streak and decks can be damaged if the product splashes. There’s also a cautionary lesson about using acid-based tile cleaners on mosaic surfaces, where the wrong application can loosen or remove the design. Operationally, this becomes a training and liability question for business owners: you may choose to keep aggressive tile soap use limited to experienced techs until your team understands dilution, dwell time, and rinse practices.  

Finally, the episode runs through other Biodex options that round out a service truck: algaecides, foam control, enzymes, and specialty water treatment chemicals. One algaecide discussed, Skillet, can create surface film and foam if overused, yet it can also help with nuisance insects like bees that linger at spillways and spas, which is an unexpected operational benefit for certain backyards. Foam Down is recommended as a fast-acting defoamer for spas, fountains, and water features, with the reminder that foam usually signals an underlying water quality issue, often old spa water or built-up contaminants. The broader product lineup includes clarifiers, digesters (enzymes), filter cleaners, phosphate removers, alum, and borate products such as Biodex Borate Plus, which many pool pros use to help inhibit algae and improve chlorine effectiveness. The throughline is simple: better outcomes come from matching the right pool chemical to the right problem, applying it safely, and supporting it with sound water balance.