--- product_id: 743661505 title: "Stress Zyme 16oz" brand: "api" price: "β‚±5512" currency: PHP in_stock: true url: https://www.desertcart.ph/products/743661505-stress-zyme-16oz store_origin: PH region: Philippines --- # Prevents toxic ammonia & nitrite spikes 16 oz potent liquid formula Boosts biological filter efficiency Stress Zyme 16oz **Brand:** api **Price:** β‚±5512 **Availability:** βœ… In Stock ## Summary > 🐟 Dive into clarity with Stress Zyme – your aquarium’s secret weapon! ## Quick Answers - **What is this?** Stress Zyme 16oz by api - **How much does it cost?** β‚±5512 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/743661505-stress-zyme-16oz) ## 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€’ **Trusted by Aquarists:** A proven formula that ensures healthier fish and cleaner water. - β€’ **Fish-Friendly Formula:** Protects your aquatic pets from harmful ammonia and nitrite poisoning. - β€’ **Effortless Maintenance:** Simplifies aquarium care with a powerful 16 oz liquid solution. - β€’ **Oxygen-Rich Environment:** Maintains optimal oxygen levels for a thriving underwater ecosystem. - β€’ **Crystal Clear Aquarium, Always:** Keeps your tank pristine by accelerating biological filter development. ## Overview Stress Zyme 16oz is a liquid aquarium additive designed to enhance biological filter development, effectively reducing harmful ammonia and nitrite levels while maintaining healthy oxygen balance. This 16-ounce formula helps keep aquariums clean and fish healthy, making it an essential maintenance product for any serious aquarist. ## Description Improves the development of the biological filter and helps clean a dirty aquarium; Helps clean a dirty aquarium; Helps prevent dangerous conditions such as as ammonia and nitrite poisoning and low oxygen levels; Assures an active biological filter, cleaner aquarium, healthier fish and good water; 16 oz. bottle ## Features - API Stress Zyme, 16-Ounce - 16 oz ## Technical Specifications | Specification | Value | |---------------|-------| | Item model number | 56E | | Is Discontinued By Manufacturer | Yes | | Item Form | Liquid | | Volume | 16 | | batteries required | No | | Batteries Included | No | ## Product Details - **Brand:** API - **Liquid Volume:** 473 Milliliters - **Item Weight:** 544.31 Grams - **Item Form:** Liquid - **Manufacturer:** Aquarium Pharmaceuticals ## Images ![Stress Zyme 16oz - Image 1](https://m.media-amazon.com/images/I/71NW462aaAL.jpg) ## 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‘ ## Frequently Bought Together - API STRESS ZYME Freshwater and Saltwater Aquarium Cleaning Solution 16-Ounce Bottle - API STRESS COAT Aquarium Water Conditioner 16-Ounce Bottle - API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 16-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.ph/products/743661505-stress-zyme-16oz](https://www.desertcart.ph/products/743661505-stress-zyme-16oz) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-05-18*