--- product_id: 640481017 title: "- Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth" brand: "red sea" price: "5148941₫" currency: VND in_stock: true reviews_count: 5 category: "Red Sea" url: https://www.desertcart.vn/products/640481017-red-sea-small-40-gallon-4-part-rcp-complete-reef store_origin: VN region: Vietnam --- # Boosts coral growth & color Optimized for 40-gallon reef tanks 4-part precision dosing - Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth **Brand:** red sea **Price:** 5148941₫ **Availability:** ✅ In Stock ## Summary > 🌟 Elevate your reef game with precision dosing perfection! ## Quick Answers - **What is this?** - Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth by red sea - **How much does it cost?** 5148941₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/640481017-red-sea-small-40-gallon-4-part-rcp-complete-reef) ## Best For - red sea enthusiasts ## Why This Product - Trusted red sea brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Liquid Dosing:** Ready-to-use liquid formula for hassle-free reef care - • **Stable Growth & Color:** Clinically proven to enhance coral growth rates and vivid coloration - • **Complete 4-Part Formula:** Calcium, Magnesium, Strontium & Barium for rock-solid coral health - • **Tailored for 40 Gallons:** Perfectly dosed for small to medium mixed reef aquariums - • **Trace Element Powerhouse:** Includes 25+ bioactive trace elements for vibrant reef ecosystems ## Overview The Red Sea Small 4-Part RCP is a scientifically formulated liquid dosing system designed for 40-gallon saltwater mixed reef aquariums. It delivers essential minerals like Calcium, Magnesium, and Strontium alongside 25+ trace elements to promote optimal coral growth, vibrant coloration, and stable reef health. Trusted by reef enthusiasts, this kit ensures professional-grade care with easy dosing and a 1-year manufacturer warranty. ## Description Product description Complete 4-part Supplement Program Red Sea Since its inception over 30 years ago, Red Sea’s vision has been to create a world in which marine and reef aquariums are the aquariums of choice for all hobbyists. This passion has guided the company throughout its product development and design. Optimal coral growth & coloration in non-refugium systems. Simplify your supplementing routine at no extra cost! Our long-term research has revealed that in reef systems without a refugium, the 36 Major, Minor and Trace elements and even the Alkalinity components are used up in a relatively fixed ratio, enabling you to supplement all element groups according to a measured Calcium uptake. Since Calcium is the key indicator to coral growth, the 4-part program revolves around a single weekly measurement of Calcium, which determines the dosages of all 4 parts. Simple. Safe. Successful. 4 Bottles, 1 Calcium Test Per Week and You're Done! Available in 3 Sizes - Small, Medium & Large Complete Reef Care is a simple but comprehensive 4-part supplement program that ensures optimal coral growth and coloration, that revolves around a single weekly measurement of Calcium, which determines the dosages of all 4 parts. A successful coral reef aquarium is dependent upon maintaining the appropriate water parameters that provide the stable environment required by the corals. This is achieved by starting with balanced seawater such as using Red Sea or Coral Pro Salt and using complete and balanced supplements, that are formulated to work together for long term use, without changing the ionic balance of the water. Red Sea’s 4-Part Complete Reef Care is the result of years of research into the physiological demands of SPS, LPS & Soft Corals in the reef aquarium and practical experience with the original 7-Part Reef Care Program on tens of thousands of diverse reef tanks worldwide. This research has shown that there are 36 Major, Minor and Trace elements that are regularly depleted from the aquarium water and have an active role in coral growth and coloration, as well as other biological activities of the reef environment. In reef systems without refugiums, coral growth is the most dominant biological process that affects the water chemistry, and that the 36 elements, including the Alkalinity components, are used up in a relatively fixed ratio. Since Calcium is the key indicator to coral growth, all the elements can be supplemented according to a measured uptake of calcium. The Complete Reef Care divides the 36 Major, Minor and Trace elements into four parts to ensure their stability and bioavailability. Part #1 contains: Calcium, Magnesium, Strontium & Barium. Part #2 contains: KH/Alkalinity components. Part #3 contains: Potassium, Boron and the halogens Iodine, Bromine and Fluorine. Part #4 contains: Iron, Manganese, Cobalt, Copper, Aluminum, Zinc, Chrome, Nickel plus 18 other bioactive trace elements Review: Simple, Effective - Loving the red sea dose system. Very easy to set up very consistent works fantastic with the red sea dose 4 pumps. Review: Great product, all positives no negatives - I have been using this 4 part for about 6 months now and results are amazing. If your looking for a way to take your reef tank to the next level this is it. Your corals will be healthier, have better color and growth rates are very stable and good. ## Features - Calcium, Magnesium, Strontium & Barium in Part #1 - KH/Alkalinity components in Part #2 - Potassium, Boron, Iodine, Bromine, and Fluorine in Part #3 - Iron, Manganese, Cobalt, Copper, Aluminum, Zinc, Chrome, Nickel, and 18 other bioactive trace elements in Part #4 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D8R8VLL5 | | Best Sellers Rank | #55,634 in Pet Supplies ( See Top 100 in Pet Supplies ) #532 in Aquarium Water Treatments | | Brand | Red Sea | | Brand Name | Red Sea | | Customer Reviews | 4.6 out of 5 stars 28 Reviews | | Included Components | Kit | | Item Form | Liquid | | Item Type Name | Box | | Item Weight | 5 Pounds | | Liquid Volume | 1 Liters | | Manufacturer | Red Sea | | Manufacturer Part Number | RCP | | Model Number | RCP | | Target Species | Fish | | UPC | 730773227518 | | Unit Count | 1 Count | | Warranty Description | 1 Year Manufacture | ## Product Details - **Brand:** Red Sea - **Item Form:** Liquid - **Item Weight:** 5 Pounds - **Liquid Volume:** 1 Liters - **Manufacturer:** Red Sea ## Images ![- Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth - Image 1](https://m.media-amazon.com/images/I/61e4UeHK2+L.jpg) ![- Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth - Image 2](https://m.media-amazon.com/images/I/712v5YZc66L.jpg) ![- Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth - Image 3](https://m.media-amazon.com/images/I/71BVVI1pFRL.jpg) ![- Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth - Image 4](https://m.media-amazon.com/images/I/71Wkk8tNaPL.jpg) ![- Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth - Image 5](https://m.media-amazon.com/images/I/71kRSx75IcL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Simple, Effective *by T***. on April 15, 2026* Loving the red sea dose system. Very easy to set up very consistent works fantastic with the red sea dose 4 pumps. ### ⭐⭐⭐⭐⭐ Great product, all positives no negatives *by P***K on July 25, 2025* I have been using this 4 part for about 6 months now and results are amazing. If your looking for a way to take your reef tank to the next level this is it. Your corals will be healthier, have better color and growth rates are very stable and good. ### ⭐⭐⭐⭐⭐ Fast delivery but read the fine print *by S***L on December 19, 2024* Fine print says do not use if you have a refugium. Most of us use one. Use the Red Sea foundational product ## Frequently Bought Together - Red Sea Small (40 Gallon) 4-Part RCP Complete Reef Care Supplement Dosing System for Saltwater Mixed Reef Marine Aquariums for Optimal Coral Growth - Aquarium Choice dosing tubing for Saltwater dosing Pump and Dosing Pump Reservoir Container --- ## 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.vn/products/640481017-red-sea-small-40-gallon-4-part-rcp-complete-reef](https://www.desertcart.vn/products/640481017-red-sea-small-40-gallon-4-part-rcp-complete-reef) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*