--- product_id: 58932931 title: "API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle" brand: "api" price: "β‚©198972" currency: KRW in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.kr/products/58932931-api-stress-zyme-cleaning-solution-for-freshwater-and-saltwater-aquariums store_origin: KR region: South Korea --- # Boosts beneficial bacteria 1.9L powerful bio-cleanser Consumes sludge & algae API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle **Brand:** api **Price:** β‚©198972 **Availability:** βœ… In Stock ## Summary > 🐟 Dive into crystal-clear waters with every drop! ## Quick Answers - **What is this?** API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle by api - **How much does it cost?** β‚©198972 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/58932931-api-stress-zyme-cleaning-solution-for-freshwater-and-saltwater-aquariums) ## 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 - β€’ **Biological Boost:** Infuses beneficial bacteria to support a thriving aquatic ecosystem - β€’ **Starter Tank Savior:** Double dose jumpstarts new aquariums, replacing bulky starter kits - β€’ **Weekly Wellness Ritual:** Simple dosingβ€”1 tablespoon per 10 gallons weekly for consistent health - β€’ **Sludge & Algae Eliminator:** Naturally consumes debris to maintain pristine gravel and decorations - β€’ **Effortless Aquarium Clarity:** Keeps freshwater & saltwater tanks sparkling clean with minimal maintenance ## Overview API Stress Zyme is a 1.9L aquarium cleaning solution designed for both freshwater and saltwater tanks. It reduces maintenance by consuming sludge and algae, while adding beneficial bacteria to promote a healthy aquatic environment. Ideal for weekly use, it also doubles as a powerful starter treatment for new tanks, ensuring your fish thrive in a clean, balanced habitat. ## Description From the manufacturer It’s Smart To Be Proactive! The best way to keep your aquarium clean is to maintain good water quality. This will keep your fish strong and vibrant, as well as preventing disease. How Do I Maintain A Healthy Environment? It is important to test your aquarium water weekly to verify good quality in addition to a bi-weekly partial water change of no more than 25% to help reduce toxic buildup, remove debris the filter missed, and replenish the oxygen available to fish. How Do I Take Good Care Of My Aquarium? Feed & observe fish daily Test water quality weekly Change 25% water bi-weekly Restore your ecosystem monthly Feed Your Fish Daily Feed your fish twice daily only the amount of food they can eat in 2 to 3 minutes depending on the species. Some fish such as bottom feeders and algae eaters will need up to 30 minutes to 2 hours. Overfeeding & low quality nutrition cause unconsumed food and more excrement which cloud water and raise harmful ammonia levels, possibly leading to fish loss. Take time to observe fish and the water temperature to ensure they are active & healthy. Test Water Quality Weekly An aquarium is a closed environment and in order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even loss. The 5 common water quality parameters are Ammonia, Nitrite, Nitrate, and pH - all of which may vary over time and all are invisible to the eye which is why it is important to test weekly with API MASTER TEST KITS or API 5-IN-1 TEST STRIPS. It is also a good time to add API STRESS ZYME to keep your aquarium & gravel clean. Change 25% Water Every 2 Weeks In a closed aquarium environment there are no natural rivers or streams to carry away debris and other waste materials. It is important to renew 25% of the aquarium water every two weeks. When you change the water, it is important to know that tap water contains chemicals that make it safe for us to drink but harmful for fish, therefore add a water conditioner such as API STRESS COAT. Restore Your Ecosystem Monthly It is important to change your filter media & clean gravel monthly, however in doing so it can disrupt the fragile ecosystem of your aquarium. Use API QUICK START to strengthen it with β€˜beneficial’ nitrifying bacteria that will naturally consume toxic compounds and help prevent fish stress. Also recommended when starting a new aquarium or changing the water. Making A Better Underwater World At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. Review: Useful for starting a new tank - It simply replaces all those starter kits as you can double the dose for a new aquarium to boost the biological filter. What a brilliant product! My guppies are happy with this. Review: Fish - Good value for money ## Features - Contains one API stress zyme freshwater and saltwater aquarium Cleaning solution 1.9 Litre bottle - Keeps freshwater and saltwater aquariums Clean and reduces maintenance - Consumes sludge to help keep gravel and decorations Clean and algae-free - Adds beneficial bacteria for a healthy aquarium - Use weekly to maintain a Clean, healthy aquarium; add 1 tablespoon per 10 gallons of water weekly ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000256DIQ | | Allergen Information | Apple Free | | Best Sellers Rank | 3,605 in Pet Supplies ( See Top 100 in Pet Supplies ) 38 in Aquarium Water Treatments | | Brand | API | | Brand Name | API | | Country Of Origin | USA | | Customer Reviews | 4.7 out of 5 stars 11,745 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 | 4.1 Pounds | | Item form | Liquid | | Item weight | 4.1 Pounds | | Liquid Volume | 64 Fluid Ounces | | Liquid volume | 64 Fluid Ounces | | Manufacturer | API | | Manufacturer Part Number | 56J | | Model Number | 56J | | Number of Packs | 1 | | Target Species | Fish | | UPC | 317163100561 | | Unit Count | 1 count | | Unit count | 1 count | ## Product Details - **Brand:** API - **Item form:** Liquid - **Item weight:** 4.1 Pounds - **Liquid volume:** 64 Fluid Ounces - **Number of Packs:** 1 ## Images ![API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle - Image 1](https://m.media-amazon.com/images/I/81VdRQaYCRL.jpg) ![API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle - Image 2](https://m.media-amazon.com/images/I/81DP-svsA7L.jpg) ![API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle - Image 3](https://m.media-amazon.com/images/I/91Wlg1zGY2L.jpg) ![API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre Bottle - Image 4](https://m.media-amazon.com/images/I/91M80WNPvvL.jpg) ![API Stress Zyme Cleaning Solution for Freshwater and Saltwater Aquariums, 1.9 Litre 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. πŸ‘ ## Customer Reviews ### ⭐⭐⭐⭐⭐ Useful for starting a new tank *by K***A on 16 February 2025* It simply replaces all those starter kits as you can double the dose for a new aquarium to boost the biological filter. What a brilliant product! My guppies are happy with this. ### ⭐⭐⭐⭐⭐ Fish *by N***N on 2 November 2025* Good value for money ### ⭐⭐⭐⭐⭐ Tank treatment *by S***. on 31 May 2026* Good value for money ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/58932931-api-stress-zyme-cleaning-solution-for-freshwater-and-saltwater-aquariums](https://www.desertcart.kr/products/58932931-api-stress-zyme-cleaning-solution-for-freshwater-and-saltwater-aquariums) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-06-05*