{"title":"Algaecides","description":"\u003cp\u003eShop algaecides at Active Pool Supply, with genuine OEM and quality aftermarket options.\u003c\/p\u003e","products":[{"product_id":"1-qt-silver-algaedyne","title":"Pool Products Packaging Silver Algaedyn, 32 Oz, 47-600","description":"\u003cp\u003eSilver Algaedyn is a concentrated algaecide for swimming pools and spas built on colloidal silver rather than copper. The silver particles interfere with the essential metabolic activity of algae cells, which kills every form of living algae, including black algae that resists most treatments, and leaves a residual that keeps new growth from starting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEasy on the filter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAlgae slime is what clogs a filter and shortens the run between backwashes. Because Silver Algaedyn stops the slime from forming, it has no adverse effect on filters and helps keep them clean and free flowing, so filtration cycles run longer and there is less backwashing to do.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to use it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePour it into the skimmer, add it directly through the filter, or introduce it on the line leading to the filter. It is compatible with chlorine and other pool chemicals and works with your sanitizer rather than against it. The first dose is best added while the pool is filling, since even fresh water can carry algae in; after that, use it as an ongoing preventive. The bottle is 32 oz, one quart.\u003c\/p\u003e","brand":"Pool Products Packaging","offers":[{"title":"Default Title","offer_id":48624550740180,"sku":"POO-50-1400","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/47-600-qt-silver-algaedyne.jpg?v=1788643385"},{"product_id":"easycare-algatec-super-algaecide-and-clarifier-64-oz-bottle","title":"EasyCare Algatec Super Algaecide and Clarifier, 64 oz. Bottle, 10064","description":"\u003cp\u003eAlgatec is EasyCare's industrial strength algaecide and clarifier, sold here in the 64 oz. bottle. It is a concentrate built for killing algae fast, and it does the job with or without chlorine in the water, which makes it the product to reach for when a pool has gone green and the sanitizer level is nowhere near where it should be.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it kills, and how fast\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGreen, yellow and black algae are all covered. Most growths respond in 4 to 24 hours. Black algae, which is a fungus and roots into plaster, takes longer, typically 7 to 10 days.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEasy on the water\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAlgatec is metal free, so it will not stain surfaces, and it does not foam. It leaves pH, sanitizer levels and the rest of the water chemistry where they were, and there is no swim out period; the pool can be used immediately after treatment. No testing is required before dosing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDosing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eVisible algae: 1 quart per 10,000 gallons. Clean pool start up: 1 to 2 cups per 10,000 gallons. Suitable for above ground and inground pools.\u003c\/p\u003e","brand":"EasyCare","offers":[{"title":"Default Title","offer_id":48624928719060,"sku":"MCG-50-6007","price":43.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_662156ed-1b65-4902-ab89-013da0a82e23.jpg?v=1788654909"},{"product_id":"easycare-fountec-algaecide-and-clarifier-64oz","title":"EasyCare Fountec Algaecide and Clarifier, 64 oz, 50064","description":"\u003cp\u003eEasyCare Fountec, part 50064, is a combined algaecide and clarifier made for fountains. This is the 64 oz bottle. It kills yellow and black algae and lifts the clinging, stubborn growth off surfaces with minimal brushing, then clarifies the water so the fountain runs ultra clear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMade for fountains, not pools or fish ponds\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFountec is non foaming, so it will not throw suds in a spray or waterfall feature, and it is non staining. There is no weekly chlorine and no testing; a small weekly dose is enough to prevent regrowth. Water treated with Fountec is safe for plants, birds and animals to drink. It is not safe for fish, so keep it out of ponds and features that hold fish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to use it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTreat at the initial dose to clear existing algae, brush lightly if growth is heavy, then move to the small weekly maintenance dose to keep the water clear. Dosing instructions are on the bottle.\u003c\/p\u003e","brand":"EasyCare","offers":[{"title":"Default Title","offer_id":48624938746068,"sku":"MCG-50-5006","price":64.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_c4aee58b-bb3c-49fd-ac59-92be8eafcb54.png?v=1788655850"},{"product_id":"polyquat-60-highly-concentrated-algaecide-1qt","title":"ProTeam Polyquat 60 Highly Concentrated Algaecide, 1 qt, C003098-CS20Q","description":"\u003cp\u003eProTeam Polyquat 60 is a highly concentrated algaecide supplied in a one quart bottle. It works as an algae preventative and as a remover, and it is effective against all types of algae in any type of pool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat sets it apart\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt contains no metals, so there is no copper to stain plaster or tint blonde hair. It is pH neutral, so it does not drag the water out of balance. And it is non-foaming, which is the reason it is a good fit for a pool with an attached spa or with water features that keep the surface moving.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDosing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eInitial treatment is 6 to 11 oz per 10,000 gallons of pool water. Maintenance is 2 to 4 oz per 10,000 gallons weekly. Performance is best with pH between 7.2 and 7.6.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWorking alongside chlorine\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolyquat 60 is not affected by high chlorine residuals, so it keeps working after a shock treatment. Used consistently it reduces sanitizer consumption, meaning the pool needs less chlorine to hold its residual.\u003c\/p\u003e","brand":"Proteam","offers":[{"title":"Default Title","offer_id":48625580900564,"sku":"PTM-50-9003","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_e021527e-0b86-41fa-a126-68a586bd3218.png?v=1788688822"},{"product_id":"easycare-pooltec-algaecide-clarifier-and-chlorine-salt-cell-booster-64-oz-bottle","title":"EasyCare PoolTec Algaecide, Clarifier and Chlorine Salt Cell Booster, 64 oz. Bottle, 30064","description":"\u003cp\u003eEasyCare PoolTec is a three in one pool water treatment in a 64 oz bottle: an algaecide, a water clarifier and a chlorine booster, sold under part number 30064.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlgae control\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eUsed on a schedule it gives continuous prevention against green, yellow and black algae, and where algae has already taken hold it kills most of it within 4 to 24 hours. Black algae in particular is stubborn enough that a preventative program is worth more than a rescue treatment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChlorine and salt cells\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePoolTec boosts the effectiveness of the chlorine already in the water by up to six times, or 600 percent. On a salt pool it also improves the cell chlorine output and performance, which makes it a good match for heavy use pools where the cell is working hard through the season.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eClarity and phosphates\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe clarifier package in the bottle pulls the fine particles that cause haze, taking the water to an ultra clear finish. It remains effective even where phosphate levels run above 5,000 ppb, a level at which many treatments lose their grip.\u003c\/p\u003e","brand":"EasyCare","offers":[{"title":"Default Title","offer_id":48625843568852,"sku":"MCG-50-3006","price":41.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_cb828cd3-2608-4ab7-b798-426c723e1ed1.jpg?v=1788701416"},{"product_id":"gal-silver-algaedyne","title":"Pool Products Packaging Silver Algaedyne, 1 Gallon, 47-612-G","description":"\u003cp\u003eSilver Algaedyne from Pool Products Packaging, part number 47-612-G, is supplied in a 1 gallon bottle. The product is packed four bottles to a case.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is listed\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe available information covers the identity and the packaging: a pool algaecide, gallon size, under the Silver Algaedyne name. No dose rates or chemistry details are carried here.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you use it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRead the manufacturer label on the bottle for dosing, handling and storage. Those directions are specific to the product and to your pool volume.\u003c\/p\u003e","brand":"Pool Products Packaging","offers":[{"title":"Default Title","offer_id":48626299338964,"sku":"POO-50-1401","price":227.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/47-612-g-gal-silver-algaedyne.jpg?v=1788707792"},{"product_id":"swimtrine-plus-1-gallon","title":"Applied Biochemists Swimtrine Plus, 1 Gallon, 406104A","description":"\u003cp\u003eApplied Biochemists Swimtrine Plus in a 1 gallon bottle, part number 406104A. It is listed by the manufacturer under algae control for swimming pools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrdering notes\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe gallon appears in our source data under both 406104A and 406104. Either number refers to the same Applied Biochemists gallon, which is worth knowing if you are reordering from an old invoice or a faded label.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUsing it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDose rates are printed on the bottle and depend on pool volume and on how far the algae has progressed. Follow the label as written rather than estimating.\u003c\/p\u003e","brand":"Advantis Technologies","offers":[{"title":"Default Title","offer_id":48626844041428,"sku":"APB-50-856","price":117.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4c9272b7-689d-490a-a11a-656297f53227.jpg?v=1788715784"},{"product_id":"black-algaetrine-1-quart","title":"Applied Biochemists Black Algaetrine, 1 Quart, 406303A","description":"\u003cp\u003eBlack Algaetrine from Applied Biochemists is a 1 quart copper algaecide made for one job: black algae. It carries 3.07 percent active copper along with penetrating agents that push the copper into the algae cells rather than sitting on top of them.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy black algae is different\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBlack algae roots into plaster and grout and grows a protective outer layer over itself. That layer is why a general purpose algaecide and a normal chlorine level often make no visible difference to it. Getting on top of it means breaking that layer open and getting a product into the colony underneath, which is what the penetrating agents in this formulation are there to do.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDosing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor visible growth, apply 12 ounces per 10,000 gallons of pool water and vacuum out the settled debris afterwards. For heavy growth, vacuum, clean and scrub the walls first, then dose at the same rate and vacuum again. Once the pool is clear, a maintenance dose of 6 ounces per 10,000 gallons every 5 to 7 days keeps it that way, and that interval should tighten when the weather is hot or the pool is heavily used.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIn use\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSwimming can carry on without a wait, and used at the stated doses the product will not discolor the water. It is listed for above ground and in ground pools, residential and commercial water, spas and fountains.\u003c\/p\u003e","brand":"Advantis Technologies","offers":[{"title":"Default Title","offer_id":48627601768660,"sku":"APB-50-8022","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_02d36e67-bc7f-4c58-aacc-d86476f0a3d9.png?v=1788724096"},{"product_id":"swimtrine-plus-copper-based-algaecide-32oz","title":"Applied Biochemists Swimtrine Plus Copper Based Algaecide, 32 oz, 406103A","description":"\u003cp\u003eSwimtrine Plus is a copper based algaecide concentrate from Applied Biochemists, supplied in a 32 oz bottle. It carries 9.3% copper, which is what lets a modest dose handle a full pool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCopper attacks algae directly rather than relying on the sanitizer to do the work. Swimtrine Plus kills green and mustard algae quickly, then stays in the water to stop all types of algae from taking hold again. That second half is the point: an algaecide that only kills leaves you treating the same bloom every few weeks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is compatible with bromine, chlorine, salt water, ozone and mineral sanitizers, so it can be added to almost any pool without reworking the chemistry. The label covers above ground and in ground pools, residential and commercial.\u003c\/p\u003e","brand":"Advantis Technologies","offers":[{"title":"Default Title","offer_id":48627874201812,"sku":"APB-50-8012","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_075bad70-2d2c-4910-9835-f87b47367803.jpg?v=1788729471"},{"product_id":"prevent-algaecide-1qt","title":"Proteam Prevent Algaecide, 1 qt., 7512Q68","description":"\u003cp\u003eProteam Prevent is a 50 percent quat based algaecide supplied in a 1 qt. bottle. It is listed for both preventing algae and clearing it once it has started, in above ground, in ground, residential and commercial pools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to dose it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor the initial treatment, add 1 quart per 25,000 gallons of water. After that, 5 ounces per 10,000 gallons weekly keeps the pool under control. Check the water first: performance is best with the pH between 7.2 and 7.6.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy a quat\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is a non staining, low foaming, pH neutral solution that is compatible with all forms of sanitizer, so it drops into an existing routine without changing anything else. At 50 percent it is a strong concentration, which is what makes a single quart an economical way to keep a smaller pool clear through the season.\u003c\/p\u003e","brand":"Proteam","offers":[{"title":"Default Title","offer_id":48627983417556,"sku":"PTM-50-9002","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ee9b6965-e429-48d8-ba0e-d0bfb72476a5.jpg?v=1788732375"},{"product_id":"2-algaecide-yellow","title":"Jack's Magic 2 lb The Yellow Stuff Algaecide, JMYELLOW2","description":"\u003cp\u003eThe Yellow Stuff is Jack's Magic all purpose algaecide, supplied here in the 2 lb size as part number JMYELLOW2. It handles an active breakout and then keeps working as a preventative, which is the part most owners skip and then regret in August.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt goes after all types of algae breakouts rather than a single species, so it does not matter much whether the problem in the pool is green, black spotted or the stubborn yellow film that sits on the shady wall. Once the water is clear again, the same product is a highly effective preventative on a maintenance dose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSafe for all pool finishes and compatible with all major pool sanitizing systems, so plaster, vinyl and fiberglass pools running chlorine, salt or an alternative sanitizer can all use it. Swimming can resume a few hours after treatment.\u003c\/p\u003e","brand":"Jack's Magic","offers":[{"title":"Default Title","offer_id":48628854915284,"sku":"JCK-50-702","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/jacks-magic-jmyellow2-2-yellow-stuff-algaecide.jpg?v=1788755409"},{"product_id":"poolrx-331001-blue-pool-unit-7-5k-20k-gallon-pools","title":"PoolRx +Plus Blue\/White with Silver, 7.5K to 20K Gallon Pools, 331001","description":"\u003cp\u003ePoolRx 331001 is the +Plus Blue\/White mineral unit with silver, sized for pools between 7,500 and 20,000 gallons. It is a treated alloy cylinder packed with the PoolRx granular formulation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow it works\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe minerals dissolve out of the cylinder and form a stable residual right through the pool water, which holds for up to six months. Those minerals go after algae directly and free the low level of chlorine in the water to be more active, so the pool needs less sanitizer to stay clear. Every time water passes back through the cylinder during filtration the minerals are rejuvenated.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePutting it in\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean or backwash the filter first and clear the skimmer and pump baskets. Drop the unit into the pump basket, or the skimmer if the basket is not an option, with at least three to four hours left on the pump run cycle so the granular dissolves out completely. Do not backwash or re-clean the filter for at least two weeks afterwards, so the granular can work its way through. Aim for at least one and a half turnovers a day, which usually means six to eight hours of run time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSalt pools\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn a salt pool the effect compounds. Less chlorine production is needed, which extends the life of the cell and cuts the amount of acid needed to hold pH where it belongs. It is a violation of federal law to use this product in a manner inconsistent with its labeling.\u003c\/p\u003e","brand":"PoolRx","offers":[{"title":"Default Title","offer_id":48628901970132,"sku":"PRX-50-1001","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_f452cb75-dcc4-47e8-81bf-be7c1eab63a6.jpg?v=1788757127"},{"product_id":"pool-season-12000148-super-algae-destroyer-10-lbs","title":"Pool Season Super Algae Destroyer, 10 Lbs, 12000148","description":"\u003cp\u003ePool Season Super Algae Destroyer, part number 12000148, in a ten pound container. It is an algae control product for swimming pool water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to use it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDose rate, timing and handling precautions come from the product label. Volume of water and the state of the pool both change how much goes in, so read the label rather than working from a general rule.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it fits in the routine\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAlgaecide supports a pool that is already sanitized and in balance. It is not a replacement for chlorine or for keeping pH and alkalinity in range. Store the container sealed in a cool dry place, and never store or mix it with other pool chemicals.\u003c\/p\u003e","brand":"Pool Season","offers":[{"title":"Default Title","offer_id":48633710444756,"sku":"HGH-50-9210","price":119.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/HGH-50-9210_1a.png?v=1788812292"},{"product_id":"1-gal-aqua-pure-algaecide","title":"Bio-Dex Aqua Pure Algaecide, 1 Gallon, AP04","description":"\u003cp\u003eBio-Dex Aqua Pure, part number AP04, is a copper and quat algaecide sold in a one gallon jug. It is built for pools that have an algae problem now, not just a preventive dose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the two chemistries\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCopper is a proven algaecide and a quaternary compound attacks algae a different way. Putting both in one formula lets the product work across the common colors and forms of algae rather than being strong against one and weak against the rest. It is rated for problems ranging from a mild haze to a severe bloom, and it keeps working to stop the algae returning once the water clears.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe staining question\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe usual objection to copper algaecide is staining. 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It is a liquid algae treatment for pool water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is for\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAlgae takes hold when sanitizer levels slip, when circulation leaves dead spots, or when warm weather arrives faster than the maintenance routine adjusts. An algaecide is the chemical part of the answer, working on the algae itself rather than on the balance of the water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUse it with the rest of the routine\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn algaecide on its own rarely clears an established bloom. Brushing lifts algae off the surfaces so the chemical can reach it, correct balance and sanitizer levels stop it coming straight back, and enough filter run time removes the dead material once it lets go. 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