--- product_id: 266990067 title: "API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle" brand: "api" price: "€ 207.37" currency: EUR in_stock: true reviews_count: 8 category: "Api" url: https://www.desertcart.pt/products/266990067-api-stress-zyme-freshwater-and-saltwater-aquarium-cleaning-solution-64 store_origin: PT region: Portugal --- # Safe for freshwater & saltwater 300M+ live bacteria per tsp Naturally consumes sludge & debris API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle **Brand:** api **Price:** € 207.37 **Availability:** ✅ In Stock ## Summary > 🧪 Transform your tank into a thriving aquatic paradise—effortlessly! ## Quick Answers - **What is this?** API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle by api - **How much does it cost?** € 207.37 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/266990067-api-stress-zyme-freshwater-and-saltwater-aquarium-cleaning-solution-64) ## Best For - api enthusiasts ## Why This Product - Trusted api brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Maintenance Made Effortless:** Reduces cleaning time by naturally consuming debris on gravel, decorations, and glass—so you spend more time enjoying your aquarium. - • **Dual Ecosystem Compatibility:** Formulated for both freshwater and saltwater aquariums, ensuring a balanced environment no matter your aquatic setup. - • **Powerful Bio-Cleaning Action:** Over 300 million live bacteria per teaspoon actively break down sludge and organic waste, keeping your tank pristine with minimal effort. - • **Trusted Legacy of Innovation:** Backed by over 50 years of API’s research-driven aquarium care expertise, delivering reliable and safe results every week. - • **Boosts Natural Aquarium Cycle:** Enhances beneficial bacterial growth to maintain a strong biological filter, promoting healthier fish and clearer water. ## Overview API STRESS ZYME is a 64-ounce liquid aquarium cleaning solution containing over 300 million live bacteria per teaspoon that naturally consumes sludge and organic waste. Suitable for both freshwater and saltwater tanks, it supports a healthy biological filter, reduces maintenance, and keeps gravel and decorations clean. Trusted for over 50 years, API’s formula promotes a balanced, vibrant aquatic environment with weekly use. ## Description Reduce aquarium maintenance by creating a Naturally balanced aquarium with API stress zyme freshwater and saltwater aquarium cleaning solution. Fish waste, sludge, uneaten food and other organic compounds can cause harmful water conditions including ammonia and nitrite poisoning and breathing difficulty. They can also be difficult and time-consuming to remove especially from rock, coral and gravel. API stress zyme freshwater and saltwater aquarium cleaning solution contains over 300 million live bacteria per teaspoonful to consume sludge and organic debris, keeping gravel and glass clean Naturally and boosting the Natural aquarium cycle, reducing aquarium maintenance over time. Use it weekly in freshwater and saltwater aquariums to maintain a strong biological filter and a healthy, clean aquarium. With API aquarium products, it's easy to keep a beautiful saltwater, freshwater or reef aquarium. for over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your Fish and aquarium. API aquarium treatment supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure Fish diseases and conditions such as itch and fin rot. They work to provide a safe, hospitable environment for Fish such as tropical community Fish, cichlids, goldFish and more. With API, you can spend more time admiring your Fish and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results. Review: ممتاز عن البكتريا - ممتاز Review: Great product - A great product from API. It helps to create the beneficial bacteria in no time. ## Features - Contains one (1) API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - Keeps freshwater and saltwater aquariums clean and reduces maintenance - Consumes sludge to help keep gravel and decorations clean - Adds beneficial bacteria for a healthy aquarium - Use weekly to maintain a clean, healthy aquarium ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000256DIQ | | Allergen Information | Apple Free | | Best Sellers Rank | #2,965 in Pet Supplies ( See Top 100 in Pet Supplies ) #296 in Aquarium Water Quality Testing & Treatment | | Brand | API | | Brand Name | API | | Customer Reviews | 4.8 out of 5 stars 10,112 Reviews | | Global Trade Identification Number | 00317163100561 | | Included Components | API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle | | Item Form | Liquid | | Item Type Name | Aquarium Sludge Remover | | Item Weight | 1.86 kg | | Item form | Liquid | | Item weight | 1.86 kg | | Liquid Volume | 64 Fluid Ounces | | Liquid volume | 64 Fluid Ounces | | Manufacturer | Mars Fishcare | | Manufacturer Part Number | 56J | | Model Number | 56J | | Target Species | Fish | | UPC | 317163100561 | | Unit Count | 1 Count | | Unit count | 1 Count | ## Product Details - **Brand:** API - **Liquid volume:** 64 Fluid Ounces - **Item weight:** 1.86 kg - **Item form:** Liquid - **Manufacturer:** Mars Fishcare ## Images ![API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - Image 1](https://m.media-amazon.com/images/I/81VdRQaYCRL.jpg) ![API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - Image 2](https://m.media-amazon.com/images/I/81DP-svsA7L.jpg) ![API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - Image 3](https://m.media-amazon.com/images/I/91Wlg1zGY2L.jpg) ![API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - Image 4](https://m.media-amazon.com/images/I/91M80WNPvvL.jpg) ![API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - Image 5](https://m.media-amazon.com/images/I/91rbAhq0W4L.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: Can I mix this with API Quick Start and API Stress Coat+ in a gallon every time I do water changes weekly? Or just pour it directly in my 5.5 tank?** A: In short, you don't need the Stress Zyme if you already are using the Quick Start. Here's a longer answer:The API Stress Coat is primarily a de-chlorinator and has aloe added to help maintain a healthy slime coat on the fish so this should always be added to the water and mixed before adding to the tank. The API Quick Start is meant to jump start the biological cycling of a tank and is only needed for new tanks or potentially semi established tanks that have a spike in ammonia and nitrite levels which could be caused by adding more fish. You can stop using this once your water chemistry has stabilized. API Stress Zyme is very similar in function to the Quick Start and is generally chosen to improve water clarity or stabilize chemistry in more established tanks. You don't need to use both simultaneously and would probably never see the difference compared to using just one. On another note, I always add my bacteria after there is no chance there is any chlorine so they have a better chance of proliferating. I would add either the Quick Start or the Stress Zyme the day after a water change, directly into the tank. **Q: can i mix stress coat, stress zyme and tap water conditioner? if so what amount of each should i mix? doing this harm my fishes?** A: Stress Coat and water conditioner is the same. ( stress Coat is water conditioner ). if you use both at the same time that you double it up. Maybe it is nothing will happening . But, it is not necessary to do that. **Q: How long this product can be stored before it expires? Also, would its effectiveness reduce during long time storage?** A: As for length of time you can store, I use it weekly and it lasts for about four months or so. Does not seem to lose effectiveness in that time. **Q: What is the expiration date on this Stress Zyme? It seems very inexpensive.** A: There is an expiration date on the bottle, however, these are live bacteria and once the bottle is open the shelf life is cut in half. Same as Seachems Pristine. Buy the size bottle for your tank. There is 250ml and 500 or 750ml, depending on the brand. My personal and professional advice is buy the smaller one 1st and see how much you go through, follow the instructions completely. They work well, keeps the glass cleaner longer. Also very important, make sure the aeriation is adequate and they say to change the filters 1st. If you have the $$ go for it. Best and least expensive and just as sufficient, is to change them half way before you normally change out your filters. API Stress zyme seems to keep its life span quite a while after opening. But trust me, you'll use it up way before it expires. Compared to the other similar products, this one seems to leave more of a brownish pile on the corners or underneath Ornaments, whis in turn will have to be vacuumed, netted or a baster for cooking depending on the size of your tank. 👍 ## Customer Reviews ### ⭐⭐⭐⭐⭐ ممتاز عن البكتريا *by U***I on 14 July 2023* ممتاز ### ⭐⭐⭐⭐⭐ Great product *by H***M on 17 July 2022* A great product from API. It helps to create the beneficial bacteria in no time. ### ⭐⭐⭐⭐ So far so good *by C***N on 16 February 2024* Only using it for 2 weeks now, more observation is required to really judge product On the second bottle now, has helped a lot with my nitrate levels, tank is clean, fishes are happy. ## Frequently Bought Together - API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 64-Ounce Bottle - API STRESS COAT Aquarium Water Conditioner 64-Ounce Bottle - API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 32-Ounce Bottle --- ## 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.pt/products/266990067-api-stress-zyme-freshwater-and-saltwater-aquarium-cleaning-solution-64](https://www.desertcart.pt/products/266990067-api-stress-zyme-freshwater-and-saltwater-aquarium-cleaning-solution-64) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-19*