
Is your pool turning green? The solution is not just “add more chemicals.” It’s about using the right chemistry.
Not all algae are the same and neither are algaecides. Using the wrong one can lead to foam, stains, or algae coming right back. Here’s a quick technical breakdown Quaternary Ammonium (Quat) Algaecides Surface-active compounds that disrupt algae cell membranes Good for prevention or very light algae Can cause foaming and are easily broken down by chlorine Polyquat Algaecides Polymer-based, non-foaming quaternary compounds More stable in chlorinated water Effective for prevention and mild-to-moderate algae This is the most reliable option for ongoing maintenance Copper-Based Algaecides Use copper ions to interfere with algae metabolism Strong against persistent algae, especially black algae Can stain surfaces and turn hair green if overdosed Sodium Bromide (Mustard Algae Treatment) Reacts with chlorine to form bromine, a strong sanitizer Highly effective for yellow/mustard algae Changes pool chemistry and must be carefully controlled Important: sodium bromide-based algaecides have been banned in Texas for pool use. Important: Algaecides


