--- product_id: 4050349 title: "Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White" brand: "applied biochemists" price: "373.46 DT" currency: TND in_stock: true reviews_count: 8 category: "Applied Biochemists" url: https://www.desertcart.tn/products/4050349-applied-biochemists-406303a-black-algaetrine-swimming-pool-algaecide-and-deposit store_origin: TN region: Tunisia --- # Long-lasting 2-3 week effect Safe for all pool types & sanitizers Copper-powered algae killer Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White **Brand:** applied biochemists **Price:** 373.46 DT **Availability:** ✅ In Stock ## Summary > 🕶️ Keep your pool flawless and algae-free—because your summer deserves the best splash! ## Quick Answers - **What is this?** Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White by applied biochemists - **How much does it cost?** 373.46 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/4050349-applied-biochemists-406303a-black-algaetrine-swimming-pool-algaecide-and-deposit) ## Best For - applied biochemists enthusiasts ## Why This Product - Trusted applied biochemists brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Swim-Ready Fast:** No waiting required after application—jump back in immediately. - • **Non-Discoloring Formula:** Keeps your water crystal clear without staining or cloudiness when used as directed. - • **Sustained Algae Defense:** Continues working for weeks, reducing algae regrowth and keeping your pool pristine. - • **Universal Pool Compatibility:** Works seamlessly with chlorine, bromine, and ozone systems across all pool surfaces. - • **Deep Rooted Algae Annihilation:** Copper and penetrating agents target even the toughest black algae at its core. ## Overview Applied Biochemists 406303A Black Algaetrine is a 32 fl oz liquid algaecide designed specifically to eliminate stubborn black algae in all pool types. Powered by copper and advanced penetrating agents, it kills deeply rooted algae without discoloring water and works effectively with chlorine, bromine, or ozone sanitizers. Its fast-acting, swim-safe formula continues to protect your pool for weeks, making it a must-have for professional-grade pool maintenance. ## Description Applied Biochemist 406303A Black Algaetrine Algaecide, 32-Ounce Review: Great seller, OK product so far - The first bottle the seller sent leaked out few oz in the box. Told the seller about it and they sent a whole new bottle. Great service; I highly recommend this seller! As for working miraculously on black algae (as some reviewers had written), the jury is still out. I have a 30' above ground pool and I followed all the instructions; even used double doses. After 3 weeks the back spots (black algae) were still there. They may have been diminished some but it wasn't noticeable so I got in with a nylon pot and pan scrubber (they look like a nylon version of steel wool) and scrubbed all of the spots off with my feet using those scrubbers. The nylon pot/pan scrubbers work great and won't harm your vinyl pool liner; the only way to go. I did notice that after the application of this stuff though, the algae did come off a lot easier and has stayed gone so far (knock on wood). Bottom line is that with the heavy infestation of black algae that we had, this product did not make it vanish over night... or even within 3 weeks (even after brushing it twice a day every day). Those reviewers who did say that this product made their black algae vanish over night or in days were either delusional or did NOT actually have black algae. Review: It works, but be patient if you have large areas of black algae. - After returning home after a long absence, I found that my chlorinator and pump had stopped working and I had a pool full of green and black algae. I started treatment with my usual green/black agaecide which killed the green algae, cleared the water, and got rid of most, but not all of the black algae that had formed on the bottom of the pool. The pool is gunite/pebblecrete which makes it more difficult to remove black algae. After several weeks of brushing and vacuuming, the bottom of the pool was improving but just marginally. I decided to try this algaecide to see if it could totally eliminate what looked like huge stained areas of the pool bottom. This algaecide is a totally different formula than my previous one, and unlike the other one, does not require super-chorination (shocking) of the pool when using. I used half the bottle in my 11.000 gallon pool in each of 2 applications a couple of weeks apart. It seems like it continues to work for 2-3 weeks after application, as every few days for several weeks I noticed the dark areas getting lighter. The key is being patient and brushing with a stainless steel brush every few days. After 2-1/2 months, the dark areas are almost completely gone and the bottom of my pool is back to the Caribbean Blue it's supposed to be. ## Features - BENEFITS: Specially designed to fight tough black algae - USE: Follow directions as part of regular swimming pool maintenance - COMPATIBILITY: Works with all pool types; Functions with chlorine, bromine, and ozone sanitizers - FEATURES: Contains copper and penetrating agents to kill and prevent the growth of even the most deeply rooted algae cells; Allows for swimming without waiting; Will not discolor the water when used as directed - INCLUDES: One 32-oz container of Black Algaetrine from Applied Biochemists ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C7UCTBO | | Best Sellers Rank | #36,484 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #53 in Swimming Pool Algaecides | | Brand | APPLIED BIOCHEMISTS | | Brand Name | APPLIED BIOCHEMISTS | | Customer Reviews | 4.3 out of 5 stars 645 Reviews | | Item Form | Liquid | | Item Type Name | Swimming Pool Algaecide & Deposit Control | | Item Weight | 2 pounds | | Manufacturer | Innovative Water Care | | Manufacturer Part Number | 406303A | | Model Number | 406303A | | Number of Items | 1 | | Number of Packs | 1 | | Package Size Name | 32-Ounce | | Product Benefits | Controls Algae | | UPC | 788271257537 785336163017 | | Unit Count | 32 Fluid Ounces | ## Product Details - **Brand:** APPLIED BIOCHEMISTS - **Item Weight:** 2 Pounds - **Item Form:** Liquid - **Product Benefits:** Controls Algae - **UPC:** 788271257537 785336163017 ## Images ![Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White - Image 1](https://m.media-amazon.com/images/I/61kj8W8IDoL.jpg) ![Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White - Image 2](https://m.media-amazon.com/images/I/714ThBAt0hL.jpg) ![Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White - Image 3](https://m.media-amazon.com/images/I/91gp-Wxj9UL.jpg) ![Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White - Image 4](https://m.media-amazon.com/images/I/718J-uvcqlL.jpg) ![Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White - Image 5](https://m.media-amazon.com/images/I/91bFSaL9pQL.jpg) ## Questions & Answers **Q: Will this work on a pebble - tech pool surface?** A: my Florida pool has a Diamond Brite finish. This product did absolutely nothing to the few spots of black algae. Hand scrubbing and then rubbibg with a chlorine tab was how I deleted the algae. **Q: we drained our pool due to black algae. Can we simply scrub this on the walls? It has been empty for 3 weeks and we want to treat it and refill.** A: I would think you need to have water since this can probably damage your pool surface. It does say on the bottle not to concentrate in just one area and that the ph of water has to be 7.2-7.8 in order for this product to work. From what I read, there is no way to actually get rid of black algae forever. I kinda grows deeper and deeper into the pool walls if left untreated for a while. Even if you use algaecide, it will take care of whatever it can, but the roots will still be left not visible to the naked eye. It starts growing back as soon as the chemistry in the pool is off again and doesn't get adjusted right away. **Q: It just says to apply, does that mean while the skimmer/filter is running? Or should it be turned off when I apply?** A: Apply with pump/filter running,just pour what is needed while walking around pool **Q: Can you use this in vinyl lined in ground pools?** A: Yes. If you have any other questions you can also call 800-950-2210. FamilyPoolFun ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great seller, OK product so far *by L***9 on June 7, 2017* The first bottle the seller sent leaked out few oz in the box. Told the seller about it and they sent a whole new bottle. Great service; I highly recommend this seller! As for working miraculously on black algae (as some reviewers had written), the jury is still out. I have a 30' above ground pool and I followed all the instructions; even used double doses. After 3 weeks the back spots (black algae) were still there. They may have been diminished some but it wasn't noticeable so I got in with a nylon pot and pan scrubber (they look like a nylon version of steel wool) and scrubbed all of the spots off with my feet using those scrubbers. The nylon pot/pan scrubbers work great and won't harm your vinyl pool liner; the only way to go. I did notice that after the application of this stuff though, the algae did come off a lot easier and has stayed gone so far (knock on wood). Bottom line is that with the heavy infestation of black algae that we had, this product did not make it vanish over night... or even within 3 weeks (even after brushing it twice a day every day). Those reviewers who did say that this product made their black algae vanish over night or in days were either delusional or did NOT actually have black algae. ### ⭐⭐⭐⭐⭐ It works, but be patient if you have large areas of black algae. *by D***. on September 7, 2023* After returning home after a long absence, I found that my chlorinator and pump had stopped working and I had a pool full of green and black algae. I started treatment with my usual green/black agaecide which killed the green algae, cleared the water, and got rid of most, but not all of the black algae that had formed on the bottom of the pool. The pool is gunite/pebblecrete which makes it more difficult to remove black algae. After several weeks of brushing and vacuuming, the bottom of the pool was improving but just marginally. I decided to try this algaecide to see if it could totally eliminate what looked like huge stained areas of the pool bottom. This algaecide is a totally different formula than my previous one, and unlike the other one, does not require super-chorination (shocking) of the pool when using. I used half the bottle in my 11.000 gallon pool in each of 2 applications a couple of weeks apart. It seems like it continues to work for 2-3 weeks after application, as every few days for several weeks I noticed the dark areas getting lighter. The key is being patient and brushing with a stainless steel brush every few days. After 2-1/2 months, the dark areas are almost completely gone and the bottom of my pool is back to the Caribbean Blue it's supposed to be. ### ⭐⭐⭐⭐⭐ Couldn't have a pool in East Texas without it *by A***R on August 25, 2024* I have learned since moving into a house with a pool over 25 years ago to get ahead of any algae bloom. If persistent brushing, keeping the chemicals perfect, and 24/7 running the pool doesn't work - this is the ONLY product I have found that will actually get you back to a sparkling pool. Pretty darn pricey though so believe me I try everything before I go to the Black Algaetrine and always have a bottle in the shed. A 38,000 gallon pool usually only takes one bottle - but I don't let it get emerald green in the first place. ## Frequently Bought Together - Applied Biochemists 406303A Black Algaetrine Swimming Pool Algaecide & Deposit Control, 32 fl oz, White - Poolmaster 20178 5-Inch Aluminum-Back Swimming Pool Algae Brush with Stainless Steel Bristles, Classic Collection - McGrayel Algatec 10064 Super Algaecide for Green, Yellow and Black Algae, 64-Ounce --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/4050349-applied-biochemists-406303a-black-algaetrine-swimming-pool-algaecide-and-deposit](https://www.desertcart.tn/products/4050349-applied-biochemists-406303a-black-algaetrine-swimming-pool-algaecide-and-deposit) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-12*