--- product_id: 48699373 title: "API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle" brand: "api" price: "6718 kr" currency: ISK in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.is/products/48699373-api-leaf-zone-plant-fertilizer-for-freshwater-aquariums-473-ml store_origin: IS region: Iceland --- # Rapid absorption for fast plant growth 473 ml nutrient-rich formula Chelated iron & potassium blend API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle **Brand:** api **Price:** 6718 kr **Availability:** ✅ In Stock ## Summary > 🌱 Elevate your aquarium’s green game — don’t let your plants miss out! ## Quick Answers - **What is this?** API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle by api - **How much does it cost?** 6718 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/48699373-api-leaf-zone-plant-fertilizer-for-freshwater-aquariums-473-ml) ## 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 - • **Fast-Acting Formula:** Designed for rapid absorption to revive and maintain lush aquatic plants quickly. - • **Vibrant, Hardy Leaves:** Promotes strong, colorful foliage that stands out in any freshwater aquarium. - • **Weekly Care Essential:** Use regularly to prevent yellowing and decay, ensuring your aquarium stays picture-perfect. - • **Precision Nutrient Boost:** Contains chelated iron and potassium for targeted plant health without excess nitrates. - • **Aquarium Ecosystem Friendly:** Safe for fish and invertebrates, supporting a balanced, thriving underwater environment. ## Overview API Leaf Zone Plant Fertilizer is a 473 ml liquid formula specially crafted for freshwater aquariums. It delivers essential nutrients like chelated iron and potassium to promote vibrant, healthy aquatic plants with rapid absorption. Regular weekly use prevents leaf yellowing and decay, supporting a balanced ecosystem safe for fish and invertebrates. Trusted by thousands, it’s a must-have for any millennial aquarist aiming for a lush, Instagram-worthy underwater garden. ## 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 ‘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: Superb products. - Superb product. API is one of my resources for many of my aquarium essentials. Never had any problem with any of there items. Great value for money, with many products giving you size options for what you need. All products from medicated to water parameters and plant care. These products are made with an ease of understanding for what that purpose is and will help you on your fish keeping journey. Review: I think it's actually working! - After trying a number of different aquarium plant fertilisers to no avail, I was surprised to finally find something which seems to actually work. I added 5ml of API leaf zone twice a week into my 87l aquarium. After 3 weeks I have noticed my desertcart sword plant looks much better! More green and growing new leaves. Other plants seem to respond positively too. I'm especially glad about the desertcart sword plant. Previously, the leaves were dissolving, full of holes and covered in brown diatoms. It's so much better now. I hope it improves even more over time. I like the leaf zone fertiliser has only iron and potassium in it and no nitrate. I tested the tap water and it is high in nitrate. Therefore, it seems my aquarium plants needed a fertiliser without any extra nitrate. Too much nitrate can cause problems, including growth of diatoms (brown algae). I also want to mention I have amano shrimps and panda cory fish and they seem to be unaffected by the fertiliser. I think API leaf zone is very good. Try a small bottle, it may do wonders to your plants. Hope it helps. ## Features - May cause an allergic skin reaction. - Contains one (1) API LEAF ZONE Freshwater Aquarium Plant Fertilizer 473 ml Bottle - Promotes strong, hardy and colourful leaves and prevents yellow, decaying leaves - Contains essential nutrients including chelated iron and potassium - Formulated for rapid absorption in freshwater aquarium plants - Use for weekly monitoring and when water or fish problems appear ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002566TW | | Best Sellers Rank | 3,557 in Pet Supplies ( See Top 100 in Pet Supplies ) 37 in Aquarium Water Treatments | | Brand | API | | Brand Name | API | | Coverage | Freshwater planted aquariums | | Customer Reviews | 4.7 out of 5 stars 9,744 Reviews | | Global Trade Identification Number | 00317163105764 | | Item Form | Liquid | | Item Weight | 0.3 Pounds | | Item form | Liquid | | Item weight | 0.3 Pounds | | Liquid Volume | 0.5 Litres | | Liquid volume | 0.5 Litres | | Manufacturer | API | | Mixing Ratio | 5 ml per 10 US gallons | | Model Number | 576J | | Number of Items | 1 | | Part Number | 576J | | Specific Uses For Product | Plant Growth | | Specific uses for product | Plant Growth | | Target Species | Aquatic Plants | | UPC | 317163105764 019014705764 317163105672 | | Unit Count | 1 count | ## Product Details - **Brand:** API - **Item form:** Liquid - **Item weight:** 136 g - **Liquid volume:** 0.5 Litres - **Specific uses for product:** Plant Growth ## Images ![API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle - Image 1](https://m.media-amazon.com/images/I/71WaB0EH-PL.jpg) ![API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle - Image 2](https://m.media-amazon.com/images/I/818kAkDQtJL.jpg) ![API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle - Image 3](https://m.media-amazon.com/images/I/91hkZDe4BTL.jpg) ![API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle - Image 4](https://m.media-amazon.com/images/I/91O4Wa6gxaL.jpg) ![API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle - Image 5](https://m.media-amazon.com/images/I/81mNITDh5HL.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: Can I use it for a goldfish tank ?** A: I think you can as it is for Aquarium plants just use the correct amount for the size of the tank. It has worked for my live plants. **Q: Correct dose for 60ltr.** A: The bottle cap has dosing markers. 5ml for 38L, so for a 60L tank you will need approx. 8ml. **Q: Hi, could someone please help me with the amount for a 350 litre tank. pretty confusing when calculating. thank you** A: 5mls per 38lts..350÷38. X 5mls **Q: Is this safe to use in a tank with shrimp** A: Yes! It's absolutely 100% shrimp safe. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Superb products. *by M***S on 23 February 2026* Superb product. API is one of my resources for many of my aquarium essentials. Never had any problem with any of there items. Great value for money, with many products giving you size options for what you need. All products from medicated to water parameters and plant care. These products are made with an ease of understanding for what that purpose is and will help you on your fish keeping journey. ### ⭐⭐⭐⭐⭐ I think it's actually working! *by I***S on 23 November 2024* After trying a number of different aquarium plant fertilisers to no avail, I was surprised to finally find something which seems to actually work. I added 5ml of API leaf zone twice a week into my 87l aquarium. After 3 weeks I have noticed my Amazon sword plant looks much better! More green and growing new leaves. Other plants seem to respond positively too. I'm especially glad about the Amazon sword plant. Previously, the leaves were dissolving, full of holes and covered in brown diatoms. It's so much better now. I hope it improves even more over time. I like the leaf zone fertiliser has only iron and potassium in it and no nitrate. I tested the tap water and it is high in nitrate. Therefore, it seems my aquarium plants needed a fertiliser without any extra nitrate. Too much nitrate can cause problems, including growth of diatoms (brown algae). I also want to mention I have amano shrimps and panda cory fish and they seem to be unaffected by the fertiliser. I think API leaf zone is very good. Try a small bottle, it may do wonders to your plants. Hope it helps. ### ⭐⭐⭐⭐ Perfect weekly top up for planted tank *by G***A on 10 February 2024* Great for keeping my planted tank green and growing in conjunction with root tabs and proper substrate. Doesn’t harm the fish or shrimps and contributes to maintaining my little ecosystem! A little goes a long way (10ml once a week or when I do a water change) and the plants are happy. The lid doubles as a measure with 1, 5, 10, 15 ml marked on it The only negative is that the lid doesn’t work very well and leaks a little if left lying down. ## Frequently Bought Together - API LEAF ZONE Freshwater Aquarium Plant Fertilizer 18-Ounce Bottle White - API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box - API Co2 Booster Freshwater Aquarium Plant Treatment 16 oz Bottle, Brown --- ## 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.is/products/48699373-api-leaf-zone-plant-fertilizer-for-freshwater-aquariums-473-ml](https://www.desertcart.is/products/48699373-api-leaf-zone-plant-fertilizer-for-freshwater-aquariums-473-ml) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-08-11*