Is there nitrogen in this? It would be helpful for the seller to post the bottle back side label.

Hey there, good idea on posting the labels, adding that to my to-do list! To answer your question, yes there is Nitrogen. Here is the guaranteed analysis of nutrient content on our Cal-Mag. Total Nitrogen 2%, 2% Nitrate Nitrogen, Calcium 2%, Magnesium 0.6%, Boron .002%, Copper .003%, iron .004%, Manganese .004%, Zinc .004%. Derived from: Calcium Nitrate, Magnesium Nitrate, Boric Acid, Copper Sulfate, Ferric Sulfate, Manganese Sulfate, Zinc Sulfate. Hope that helps! James - Bloom City Crew

Site says it is compatible with all growth mediums, but bottle says for hydroponic use ONLY. Which is it?

That terminology on the bottle is unfortunately a labeling requirement placed on us by regulators. It is compatible with all growing mediums, including soil, cocoa coir, peat, hydroponic systems, etc. Thanks, James - Bloom City Crew

Can this be mixed with epsom salt for additional magnesium as a foliar spray or added as a root drench?

Hi, Great question. It can be added to epsom salt in a water solution, however we suggest you try this Cal-Mag first on the plants - its probably more than enough magnesium. We use highly bio-available mineral forms and add organic acids to the product to increase uptake. Its also great as both a foliar spray and a root drench! Let us know how the plants grow!

What would be the salt in ppm per dose added to ro or distilled water?

Hi, thanks for the question! The PPM added would be about 120 for the low dose of 2ml per gallon, and 240 for the high dose of 4ml per gallon. Let us know if you have any other questions! James - Bloom City Crew

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CAL-MAG

Product ID: 48918090

Details

Brand
Bloom City
Item Form
Liquid
Item Weight
2 pounds
Liquid Volume
32 fluid
Specific Uses For Product
Organic

🌿Calcium + Magnesium for vibrant growth

💧32 oz ultra-pure liquid formula

⚙️2-5ml per gallon easy dosing

R1272

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

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Description

🌱 Elevate your plant game with pure power—because your garden deserves the best!

DEFICIENCY DEFENSE - Effectively reduces blossom end rot and corrects nutrient gaps for healthier plants.
ULTRA PURE FORMULA - Professional-grade calcium and magnesium to strengthen stems and enhance leaf vibrancy.
TRUSTED BY THOUSANDS - 4.6-star rating from nearly 7,000 gardeners who swear by its reliable results.
VERSATILE APPLICATION - Perfect for soil, hydroponics, indoor, and outdoor plants—one solution for all growers.
PRECISION NUTRIENT BOOST - Easily mix 2-5ml per gallon for consistent, hassle-free feeding.

Bloom City Professional Grade Ultra Pure Cal-Mag Fertilizer is a 32 oz liquid nutrient solution designed to deliver essential calcium and magnesium for stronger stems, vibrant leaves, and reduced blossom end rot. Suitable for all growing methods including soil and hydroponics, it offers easy dosing with 2-5ml per gallon of water. Trusted by thousands of gardeners, this formula supports consistent plant health and growth across a wide variety of plants.

Specifications

ASIN	B073ZNQWCM
Application Method	Watered-in fertilizer and foliar spray
Best Sellers Rank	#4,182 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #121 in Garden Fertilizers
Brand	Bloom City
Brand Name	Bloom City
Coverage	Full
Customer Reviews	4.6 out of 5 stars 6,972 Reviews
Item Form	Liquid
Item Highlight	Helps Reduce Blossom End Rot, Corrects Deficiencies, Boost Calcium Uptake, Made for Hydro & Soil, Supports Tomatoes & Peppers
Item Weight	2 pounds
Liquid Volume	32 fluid ounces
Manufacturer	Bloom City
Mixing Ratio	x mL per 1 gallon of water
Number of Items	1
Part Number	BCALMAG1Q
Specific Uses For Product	Organic
Target Species	plants
UPC	841401125141
Unit Count	32 Fluid Ounces

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R1272

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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