--- product_id: 118982648 title: "Canna Calmag Agent Calcium Magnesium Additive 1L" brand: "city hydroponics" price: "335.48 DT" currency: TND in_stock: true reviews_count: 8 category: "City Hydroponics" url: https://www.desertcart.tn/products/118982648-canna-calmag-agent-calcium-magnesium-additive-1l store_origin: TN region: Tunisia --- # Highly concentrated formula for max efficiency Enhances nutrient uptake & plant health Boosts water EC to ideal 0.4-0.7 Canna Calmag Agent Calcium Magnesium Additive 1L **Brand:** city hydroponics **Price:** 335.48 DT **Availability:** ✅ In Stock ## Summary > 🌱 Elevate your water, elevate your grow—don’t let soft water hold you back! ## Quick Answers - **What is this?** Canna Calmag Agent Calcium Magnesium Additive 1L by city hydroponics - **How much does it cost?** 335.48 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/118982648-canna-calmag-agent-calcium-magnesium-additive-1l) ## Best For - city hydroponics enthusiasts ## Why This Product - Trusted city hydroponics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Concentrated Power:** Small doses deliver big results—economical and effective for professional growers. - • **Deficiency Defense:** Prevents calcium and magnesium shortages that stunt growth and reduce yield. - • **pH Stability Booster:** Calcium and magnesium stabilize water pH, ensuring consistent nutrient availability. - • **Optimized Nutrient Absorption:** Stimulates roots to uptake more nutrients, fueling robust development and vibrant blooms. - • **Perfectly Balanced Water Hardness:** Transforms soft or RO water into nutrient-rich hydration for thriving plants. ## Overview Canna Calmag Agent is a 1L concentrated additive designed to increase the electrical conductivity (EC) of soft or reverse osmosis water by adding essential calcium and magnesium. This adjustment prevents nutrient deficiencies, stabilizes pH, and enhances nutrient uptake, promoting healthier, more vigorous plant growth and higher quality yields. Ideal for growers using purified or naturally soft water, it ensures your nutrient solution performs at its peak. ## Description Canna Calmag Agent - Concentrate for buffering soft or RO water.Canna Calmag Agent has been developed to to increase the EC of soft water. If you live in a soft water area, or use RO water then this product is great for "hardening" your water to aid the growth of robust, healthy plants.Increases the background EC of the Calcium and Magnesium in your waterReduce/avoid or treat deficienciesIncrease nutrient uptakeStimulates better quality flowersHighly concentratedHow Canna Calmag Agent WorksAll Canna nutrients and other products are designed to work with 'normal' water with a Calcium+Magnesium background EC of between 0.4 and 0.7. Normal water contains calcium, magnesium (and bicarbonate) which stabilises the water pH and provides calcium and magnesium to your plants. Soft water and reverse osmosis water (with an EC of below 0.4) do not contain enough these vital secondary nutrients. Both magnesium and especially calcium have a lot of important roles in the metabolism, health and development of plants at all stages.If you use soft water, or reverse osmosis (RO) water then you need to balance the calcium and magnesium content back to normal levels before making up your nutrient solution with Canna nutrients. If this is not done then there is a high risk of deficiencies developing which will have a detrimental effect on plant health and final crop quality and size.If you are unlucky enough to have water with an EC above 0.8 then Canna recommend using a reverse osmosis unit to clean it and get it down to an EC of virtually zero. Canna Calmag agent can then be used to raise the EC back up again to 0.4How to Use Canna Calmag Agent:Canna Calmag Agent can be used to raise the background EC of soft water or reverse osmosis (RO) water up to a level of 0.4. The EC of the water can easily be tested by you by using an EC Meter or a Bluelab Trunche Review: good price fast delivery - fast delivery after order Review: Excellent - Great ## Features - Causes serious eye irritation. - Harmful if swallowed. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | City Hydroponics | | Model Number | 882 | | Package Dimensions | 25.4 x 13.3 x 5.7 cm; 1.35 Kilograms | | Item Weight | 1.35 kg | ## Images ![Canna Calmag Agent Calcium Magnesium Additive 1L - Image 1](https://m.media-amazon.com/images/I/51-qMxRon3S.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ good price fast delivery *by M***D on 30 May 2026* fast delivery after order ### ⭐⭐⭐⭐⭐ Excellent *by A***T on 1 December 2025* Great ### ⭐⭐⭐⭐⭐ ) *by P***P on 11 August 2025* Who doesn't like calmag? what are you doing with your life? --- ## 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.tn/products/118982648-canna-calmag-agent-calcium-magnesium-additive-1l](https://www.desertcart.tn/products/118982648-canna-calmag-agent-calcium-magnesium-additive-1l) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-17*