--- product_id: 64484146 title: "Jack's Nutrients 15-0-0 Part B Calcium Nitrate, 25lbs - Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs" brand: "jack's classic" price: "$413.69" currency: USD in_stock: true reviews_count: 8 category: "Jack's Classic" url: https://www.desertcart.us/products/64484146-jacks-nutrients-15-0-0-part-b-calcium-nitrate-25lbs store_origin: US region: United States of America --- # Optimized for strong leaf growth Water-soluble powder for easy mixing 15-0-0 Nitrate-Calcium ratio Jack's Nutrients 15-0-0 Part B Calcium Nitrate, 25lbs - Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs **Brand:** jack's classic **Price:** $413.69 **Availability:** ✅ In Stock ## Summary > 🌱 Feed smart, grow strong — don’t let your garden miss out! ## Quick Answers - **What is this?** Jack's Nutrients 15-0-0 Part B Calcium Nitrate, 25lbs - Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs by jack's classic - **How much does it cost?** $413.69 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/64484146-jacks-nutrients-15-0-0-part-b-calcium-nitrate-25lbs) ## Best For - jack's classic enthusiasts ## Why This Product - Trusted jack's classic brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Mixing:** Water-soluble powder dissolves quickly, maximizing your feed efficiency - • **Trusted Performance:** Highly rated with 4.7 stars and proven results in professional gardening circles - • **Customizable Feeding:** Designed for continuous liquid feed programs, perfect for hydroponics and soil - • **Maximized Growth Potential:** Supports robust leaf development, enhancing overall plant vitality - • **Precision Nutrient Delivery:** 15-0-0 formula ensures rapid calcium and nitrate uptake for healthier plants ## Overview Jack's Nutrients 15-0-0 Part B Calcium Nitrate is a 25lb water-soluble fertilizer powder formulated to deliver essential calcium and nitrate nitrogen. Ideal for continuous liquid feed programs, especially hydroponics, it promotes strong leaf growth and optimal nutrient uptake. Trusted by gardeners with a 4.7-star rating, it mixes easily at 8.6 ounces per 100 gallons, offering a customizable and efficient feeding solution. ## Description desertcart.com : Jack's Nutrients 15-0-0 Part B Calcium Nitrate, 25lbs - Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs : Patio, Lawn & Garden Review: Always Great Results - Can’t go wrong with Jack’s 321 line of products as long as it’s mixed properly. Always thumbs up! Review: Never disappointed - I've used this for years and its never disappointed. ## Features - 15-0-0 Analysis: Provides a very soluble and available source of calcium and nitrate nitrogen sources - Works in tandem with Jack's 5-12-26 Part A. - Water-Soluble Powder: Powdered concentrates go further than liquid fertilizers - Simply mix your measured powder with water and you are ready to feed with multiple gallons of liquid fertilizer! - Mixing Rate: Dissolve 8.6 ounces in 100 gallons of water to achieve a final feed strength of 100 PPM N. - Continuous Liquid Feed Program: Intended for use with hydroponic systems - Mixing instructions by volume included. - Made for Simplicity: Made with only 2 major macronutrients for simplicity and customization in mind - Fill in the micronutrient needs of your plants separately for best results. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CY62XXP | | Best Sellers Rank | #51,605 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,393 in Garden Fertilizers | | Brand Name | Jack's Classic | | Coverage | 25 | | Customer Reviews | 4.7 4.7 out of 5 stars (605) | | Item Form | Powder | | Item Weight | 25 Pounds | | Liquid Volume | 1 Quarts | | Manufacturer | JR Peters | | Mixing Ratio | 8.6 ounces per 100 gallons | | Model Number | 79080 | | Specific Uses For Product | Leaf Growth, Plant Growth | | Target Species | plants | | UPC | 671341790808 | | Unit Count | 400.0 Ounce | ## Product Details - **Brand:** Jack's Classic - **Item Form:** Powder - **Item Weight:** 25 Pounds - **Liquid Volume:** 1 Quarts - **Specific Uses For Product:** Leaf Growth, Plant Growth ## Images ![Jack's Nutrients 15-0-0 Part B Calcium Nitrate, 25lbs - Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs - Image 1](https://m.media-amazon.com/images/I/71QIMn9XrkL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Always Great Results *by C***A on May 18, 2025* Can’t go wrong with Jack’s 321 line of products as long as it’s mixed properly. Always thumbs up! ### ⭐⭐⭐⭐⭐ Never disappointed *by J***C on October 3, 2025* I've used this for years and its never disappointed. ### ⭐⭐⭐⭐⭐ The best *by E***E on January 27, 2026* Hands down the best hydroponic fertilizer I have ever used!!!! This is like giving steroids to your pl!!! This will make them grow so quickly and produce more so long as you follow specific instructions! Very easy to use as long as you know how to measure!!! I’m a lifelong customer of this product!!!! ## Frequently Bought Together - Jack's Classic Nutrients 15-0-0 Part B Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs, 25Lbs - Jack's Classic Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs --- ## 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.us/products/64484146-jacks-nutrients-15-0-0-part-b-calcium-nitrate-25lbs](https://www.desertcart.us/products/64484146-jacks-nutrients-15-0-0-part-b-calcium-nitrate-25lbs) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-23*