(window.AmazonUIPageJS ? Not for sale in CA. Your recently viewed items and featured recommendations, Select the department you want to search in. Contains 99% copper sulfate pentahydrate as an active ingredient, Previous page of related Sponsored Products. Find many great new & used options and get the best deals for Crystal Blue Copper Sulfate Algaecide - Aquatic Grade Granular Pond Control 5 at the best online prices at … Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. Order at Amazon. (window.AmazonUIPageJS ? The algaecide container features handle & screw top for safe storage. 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Please make sure that you are posting in the form of a question. Effectively controls most types of algae. Copper sulfate was used many years ago for algae control however there was adverse environmental effects of copper build-up in the bottom sediments when this product was used. Not for sale in NY. 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In very hard water it is difficult to use copper sulfate because it binds with the calcium, precipitates out of solution, and renders the copper ineffective as an algaecide. Quantity. .heartsSheetImageContainer{overflow:auto;height:90px;white-space:nowrap}.lolVerticalScroll{overflow:auto;width:100%}.lolVerticalScrollHeight{height:280px}.lolVerticalScrollHeightSmall{height:120px}.heartsItemImageContainers{display:inline-block}.heartsListInfoBox{display:inline-block;margin-right:5px;vertical-align:top}.heartsUnderlineLink{border-bottom:#7ed8e4 2px solid;max-width:80%}.heartsDefaultListName{max-width:100%;text-overflow:ellipsis;display:inline-block;overflow:hidden}.heartsListNameEllipsis{overflow:hidden!important;text-overflow:ellipsis;display:block;white-space:nowrap;max-width:150px}.heartsNoMarginTextSeparator{margin:0}.heartsTextItemRow{padding-top:18px;text-align:center;overflow:hidden;text-overflow:ellipsis}.heartsTextItemContainer{vertical-align:bottom;width:75px;height:80px}.heartsSeeMoreItemsLink{width:120px!important} Sign up for our Daily Digest emails! Crystal Blue Copper Sulfate is a great pond algae control product for filamentous or string algae. You would use it at a rate of 8 oz. .iou-actions{margin-bottom:-10px!important}.iou-purchase-reminder{display:none} When getting rid of algae in a pond, it is always important to treat 1/2 of the pond algae at a time to avoid killing too much algae and depleting the … Crystal Blue Copper Sulfate Algaecide - Aquatic Grade Granular Pond Algae Control - 5 lbs $26.99 (430) Special offers and product promotions. Due to state regulations, this product cannot be shipped to ct, NJ, or NY. AmazonUIPageJS : P).load.js('https://images-na.ssl-images-amazon.com/images/I/017ShY1bOEL.js?AUIClients/GiftingDetailPageBuzzAssets'); Nj or NY on grapes, melons, and the most economical algae control 5.. Are interested in the item on amazon copper that inhibits photo synthesis in the algae off with. 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