{"product_id":"crystal-blue-copper-sulfate-granular-algaecide-5-lb-aquatic-grade-fast-acting-pond-algae-control","title":"Crystal Blue Copper Sulfate Granular Algaecide — 5 lb Aquatic‑Grade, Fast‑Acting Pond Algae Control","description":"\u003cp\u003e\u003cstrong\u003eCrystal Blue Copper Sulfate Granular is a 5 lb aquatic‑grade algaecide formulated to control filamentous and floating algae in large bodies of water when applied according to label directions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor pond managers and landowners facing recurring algae blooms, this high‑purity copper sulfate provides a targeted, fast‑acting option. Each bag contains 99% copper sulfate pentahydrate in a granular form designed for broadcast application over dense algal mats. It is intended for sizable water bodies and should not be used in small decorative ponds, pools, or water features or in waters containing copper‑sensitive species.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will this product reduce visible algae?\u003c\/h3\u003e\n\u003cp\u003eVisible thinning of filamentous and floating mats often appears within 24–72 hours after application, depending on water temperature, algae thickness, and circulation. Warmer water (above 60°F) speeds activity, while cooler conditions slow the reaction.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks fastest in water temperatures above 60°F.\u003c\/li\u003e\n  \u003cli\u003eMost effective when applied directly on top of dense floating mats.\u003c\/li\u003e\n  \u003cli\u003eExpect visible results within one to three days in favorable conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat precautions should I take when treating a pond?\u003c\/h3\u003e\n\u003cp\u003eUse only in large bodies of water as directed and avoid application where sensitive fish species are present. Treat small areas at a time to prevent sudden oxygen depletion caused by rapid die‑off of vegetation, which can harm aquatic life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not use in waters that contain koi, goldfish, trout, or grass carp.\u003c\/li\u003e\n  \u003cli\u003eTreat limited areas per application to avoid mass die‑off and oxygen drops.\u003c\/li\u003e\n  \u003cli\u003eFollow local regulations and label instructions for safe handling and disposal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I apply the granular copper sulfate for best effect?\u003c\/h3\u003e\n\u003cp\u003eBroadcast the granules directly onto thick floating mats or along shorelines where algae accumulates. Measure dose according to algae density and water volume, and avoid dispersing excessively into open water where it will dilute before contacting algae.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCast granules onto the top of dense algal mats for concentrated contact.\u003c\/li\u003e\n  \u003cli\u003eApply in sections rather than the entire pond at once.\u003c\/li\u003e\n  \u003cli\u003eWear appropriate PPE and avoid contact with skin and eyes during handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this harm other aquatic plants or wildlife?\u003c\/h3\u003e\n\u003cp\u003eCopper sulfate targets algae but can affect other aquatic organisms at certain concentrations. Careful dosing and selective spot treatment reduce non‑target impacts; always check for the presence of sensitive fish and avoid treating areas used for livestock watering or irrigation without guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse only in waters without copper‑sensitive species present.\u003c\/li\u003e\n  \u003cli\u003eAvoid treating whole systems at once to protect oxygen levels for fish and invertebrates.\u003c\/li\u003e\n  \u003cli\u003eConsult local authorities if you plan to use treated water for irrigation or livestock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: Crystal Blue Copper Sulfate Granular, 5 lb, is designed for pond managers, agricultural landowners, and municipal maintenance crews needing a concentrated, aquatic‑grade algaecide for sizable waters. It is suited to users who understand aquatic chemistry, follow label directions, and can restrict use where sensitive species are present. Not recommended for small decorative ponds, pools, or ponds stocked with koi, goldfish, trout, or grass carp.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this in a koi pond?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Do not use where koi, goldfish, trout, or grass carp are present; these species are sensitive to copper.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: When is the best time to apply it?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Apply during active algae growth when water temperature is above 60°F for fastest results.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Crystal Blue","offers":[{"title":"Default Title","offer_id":53795455631707,"sku":"B000RUN0T6","price":1335.25,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1029\/4430\/9595\/files\/crystal-blue-front-packaging.jpg?v=1786814775","url":"https:\/\/hallazora.com.mx\/products\/crystal-blue-copper-sulfate-granular-algaecide-5-lb-aquatic-grade-fast-acting-pond-algae-control","provider":"Hallazora","version":"1.0","type":"link"}