--- product_id: 322208289 title: "Phosphate Po4 Freshwater & Saltwater Aquarium Test Kit, 150 Count, Multicolor" brand: "api" price: "$66.56" currency: USD in_stock: true reviews_count: 5 category: "Api" url: https://www.desertcart.us/products/322208289-phosphate-po4-freshwater-and-saltwater-aquarium-test-kit-150-count store_origin: US region: United States of America --- # 0-10 ppm phosphate range 150 precise tests Reusable glass test tube Phosphate Po4 Freshwater & Saltwater Aquarium Test Kit, 150 Count, Multicolor **Brand:** api **Price:** $66.56 **Availability:** βœ… In Stock ## Summary > πŸ§ͺ Keep your aquarium thriving β€” test smarter, not harder! ## Quick Answers - **What is this?** Phosphate Po4 Freshwater & Saltwater Aquarium Test Kit, 150 Count, Multicolor by api - **How much does it cost?** $66.56 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/322208289-phosphate-po4-freshwater-and-saltwater-aquarium-test-kit-150-count) ## 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€’ **Protect Your Coral & Fish:** Control phosphate to support coral growth and keep fish environments pristine. - β€’ **Comprehensive 150-Test Supply:** Long-lasting kit with enough tests to maintain your aquarium’s health for months. - β€’ **Dual-Use for Fresh & Saltwater:** Versatile testing kit designed for both freshwater and marine aquariums. - β€’ **Easy-to-Use with Clear Results:** Includes two test solutions, glass tube, and color charts for quick, accurate readings. - β€’ **Stay Ahead of Algae Overgrowth:** Monitor phosphate levels weekly to prevent unsightly algae and green water blooms. ## Overview The Api Phosphate PO4 Test Kit offers 150 reliable tests to measure phosphate levels from 0 to 10 ppm in both freshwater and saltwater aquariums. Featuring BPA-free materials, easy-to-read color charts, and a reusable glass test tube, it empowers aquarium enthusiasts to prevent algae blooms and protect coral health with weekly monitoring. ## 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 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: Planted Aquarium -- Water Testing - This is perfect for hobbyist like me that enjoy discreet nutrient supplementation. Makes it fun watching over time the depletion of phosphate. I then experiment with different dosaging of phosphate based not only on quantity added but also seeing what is measured in the water The results of this product using drops of reagents seems more reliable than another product that I purchased that works by inserting of a strip in a test tube filled with the sample under test. However using a competitor strip test product is more convenient. I use the competition brand strip test as a quick way to determine whether phosphate is measurable. Then I use this API drop test if I want to investigate the ppm further Review: Good Test to have in reserve. - I suspected high phosphate was the cause of my sudden growth in velvet algae. This test proved it. But moreso, that our tap water which I was using for water changes was also high in phosphate- so needed to use a phosphate remover. Test has come in very useful. ## Features - Phosphate Can Enter Your Aquarium Through Tap Water, Fish Waste, And Decaying Organics Such As Uneaten Food And Dead Algae. Excess Phosphate Contributes To Unsightly Algae And Green Water Blooms, And In Saltwater, Excess Phosphate Can Inhibit The Growth Of Hard Corals. - The Api Phosphate Test Kit Tests Phosphate Levels From 0 To 10 Ppm So That You Can Easily Monitor The Condition Of Your Aquarium Water And May Be Used In Both Fresh And Saltwater Aquariums. - Contains 150 Tests And Includes 2 Test Solutions, Easy-To-Ready Instructions, Glass Test Tube And 2 Color Charts - Phosphate Enters Your Aquarium Through Fish And Invertebrate Waste, And Excess Phosphate Can Cause Problematic Conditions In Your Tank. Use The Api Phosphate Test Kit To Test For High Phosphate Levels Weekly. It May Be Used For Both Marine (Saltwater) And Freshwater Aquariums. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BUFRY30 | | Allergen Information | BPA-Free | | Batteries Included | No | | Color | Multicolor | | Customer Reviews | 4.6 4.6 out of 5 stars (13,423) | | Date First Available | 13 May 2016 | | Item Weight | 68 g | | Item model number | 63L | | Number of Items | 1 | | Pet Life Stage | All Life Stages | | Pet Type | Fish | | Product Dimensions | 20.32 x 20.32 x 20.32 cm; 68.03 g | | Quantity | 1 | | Size | 1 Count (Pack of 1) | | Specific Uses | Active | | Volume | 1.25 | | batteries required | No | ## Images ![Phosphate Po4 Freshwater & Saltwater Aquarium Test Kit, 150 Count, Multicolor - Image 1](https://m.media-amazon.com/images/I/61sI5K0C7LL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Planted Aquarium -- Water Testing *by P***L on 24 November 2025* This is perfect for hobbyist like me that enjoy discreet nutrient supplementation. Makes it fun watching over time the depletion of phosphate. I then experiment with different dosaging of phosphate based not only on quantity added but also seeing what is measured in the water The results of this product using drops of reagents seems more reliable than another product that I purchased that works by inserting of a strip in a test tube filled with the sample under test. However using a competitor strip test product is more convenient. I use the competition brand strip test as a quick way to determine whether phosphate is measurable. Then I use this API drop test if I want to investigate the ppm further ### ⭐⭐⭐⭐⭐ Good Test to have in reserve. *by L***N on 7 January 2025* I suspected high phosphate was the cause of my sudden growth in velvet algae. This test proved it. But moreso, that our tap water which I was using for water changes was also high in phosphate- so needed to use a phosphate remover. Test has come in very useful. ### ⭐⭐⭐⭐⭐ Pod test kit *by L***E on 26 October 2025* If you have a pond, you need API products. They are the only ones my husband uses. --- ## 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.us/products/322208289-phosphate-po4-freshwater-and-saltwater-aquarium-test-kit-150-count](https://www.desertcart.us/products/322208289-phosphate-po4-freshwater-and-saltwater-aquarium-test-kit-150-count) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-14*