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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Bloom City Professional Grade Ultra Pure Cal-Mag Fertilizer, (1 Gallon)

Bloom City Professional Grade Ultra Pure Cal-Mag Fertilizer, (1 Gallon)

Product ID: 48892108

Details

Brand
Bloom City
Item Form
Liquid
Item Weight
8 pounds
Liquid Volume
1 gallons
Specific Uses For Product
Plant Growth

🌱Boosts Calcium & Magnesium Uptake

🏆Top #105 Garden Fertilizer

💧1 Gallon Ultra-Pure Liquid

¥26508

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Description

🌿 Elevate your garden game with ultra-pure Cal-Mag power!

TRUSTED PROVEN - Made in the USA with a 4.6-star rating from nearly 7,000 growers—join the elite growers’ club.
DEFICIENCY DEFENSE - Effectively reduces blossom end rot and corrects nutrient imbalances for flawless harvests.
PURE POWER FOR PEAK GROWTH - Ultra-pure Cal-Mag formula fuels vigorous plant development and resilience.
PRECISION DOSING FOR EVERY STAGE - Customizable mixing ratios ensure perfect nutrient delivery from vegetative to bloom phases.
VERSATILE FOR SOIL HYDROPONICS - Optimized for both indoor gardens and advanced hydroponic systems—grow anywhere, anytime.

Bloom City Professional Grade Ultra Pure Cal-Mag Fertilizer is a 1-gallon liquid nutrient solution designed to enhance plant strength and growth by supplying essential calcium and magnesium. Suitable for both soil and hydroponic systems, it helps prevent blossom end rot and corrects nutrient deficiencies, supporting a wide range of plants including vegetables, houseplants, and turf. Highly rated and made in the USA, it offers precise dosing for all growth stages.

Specifications

ASIN	B073ZP47ZN
Best Sellers Rank	#2,931 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #105 in Garden Fertilizers
Brand Name	Bloom City
Coverage	Full
Customer Reviews	4.6 4.6 out of 5 stars (6,960)
Item Form	Liquid
Item Highlight	Helps Reduce Blossom End Rot, Corrects Deficiencies, Boost Calcium Uptake, Made for Hydro & Soil, Supports Tomatoes & Peppers
Item Weight	8 pounds
Liquid Volume	1 gallons
Manufacturer	Bloom City
Mixing Ratio	2-4 mL per gallon (vegetative stage), 3-5 mL per gallon (bloom)
Model Number	Cal-Mag UltraPure \| Plus Micros
Number of Items	1
Number of Packs	1
Part Number	BCALMAG1G
Specific Uses For Product	Plant Growth
Target Species	Houseplants, Greenhouse Plants, Edible Plants (fruits and veggies), Trees, Turf
UPC	841401125158
Unit Count	128 Ounce

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¥26508

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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