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BioGuard SilkGuard Complete Sticks deliver the same four-technology formula as BioGuard's tablets in an elongated stick format — and the stick shape exists for a specific reason. These are built for skimmer chlorination. Feeding chlorine through a skimmer is convenient and it's what most pool owners naturally reach for, but with ordinary trichlor it carries a real risk. When the pump shuts off, water stops moving through the skimmer while the product keeps dissolving into a small standing volume. What sits there overnight is an extremely concentrated, strongly acidic slug of chlorine, in direct contact with the skimmer housing, the plumbing, and the pump seals. Over a season that's how equipment gets corroded from the inside. SmartGuard® Technology solves that directly: the sticks dissolve more slowly when the pump is off. The release rate responds to whether water is actually moving past them, so the concentrated overnight slug doesn't form. That's what makes these safe for skimmer use, and it's the practical difference between this product and commodity chlorine sticks. Alongside SmartGuard, the formula carries the rest of the SilkGuard Complete package. SilkGuard® Technology attaches to hard water minerals and metal surfaces, softening how the water feels while protecting the pool finish and equipment from scale, corrosion, and staining. SunShield® Technology shields the chlorine residual from ultraviolet breakdown. And algae-killing crystals add a copper-based preventative to every stick, working against algae continuously rather than only when you remember to dose an algaecide. At 84% available chlorine, dosing works out to roughly 2 sticks per 10,000 gallons per week. Available in 4 lb and 18 lb sizes, and usable in feeders and floaters as well as skimmers. Pro Tip: Never put any other chemical into the same skimmer, feeder, or floater where these sticks are in use. Mixing trichlor with another pool chemical — calcium hypochlorite shock above all — inside a confined dispenser can cause a fire or explosion. This is a documented and recurring cause of equipment fires, not a cautious disclaimer. One product per device, wash and dry any scoop before switching product types, and store your sticks and your shock on separate shelves in sealed containers. Brand BioGuard®
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🇺🇸 Ship from USA · On Agora since 2026
$49.99