Is there a kit available that contains the master blend, and also the calcium nitrate and magnesium sulfate . sure would be nice .

Yes, sold in amazon and work great. Instructions on the bag and good price.

What the best way to adjust EC if its to low and you already mixed all 3 parts together

First, you should not mix the calcium nitrate together with the master blend and magnesium sulfate (EPSON salts) at the same time. Mix the master blend and EPSON salts together and mix the calcium nitrate separately before adding to your nutrient solution. When you mix all 3 together at the same time it binds up the nutrients and they can’t release properly. See if mixing them separately before adding helps.

Can this fertilizer be applied directly to container plants or must it only be used in a hydroponic system?

Container plants will love this. I top dress soil and water in. I also measure it in filtered water to apply. It's very good stuff.

Newby here, I have an organic container garden, are this supplements synthetic? I purchased this and not sure if I should use it.

Totally synthetic, so now what?

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MasterBlend 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (1 Pound)

MasterBlend 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (1 Pound)

Product ID: 43589230

Details

Brand
MasterBlend
Item Form
Powder
Item Weight
16 ounces
Number of Packs
3
Specific Uses For Product
Hydroponic

⚡Super concentrated formula for maximum efficiency

🍅Optimized NPK ratio (4-18-38) tailored for tomatoes & veggies

💧100% water soluble for instant nutrient delivery

223 Lei

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Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🍅 Grow like a pro, harvest like a boss!

EASY MIX USE - Fully water soluble powder ensures quick absorption and hassle-free application
HYDROPONIC HERO - Trusted by commercial growers for consistent, high-yield results
COMPLETE NUTRITION - Includes all essential trace minerals for vibrant plant health
BULK BUY FLEXIBILITY - Available in 1, 5, or 25-pound quantities to fit your garden scale
PRO LEVEL PERFORMANCE - Pairs perfectly with Magnesium Sulfate & Calcium Nitrate for balanced growth

MasterBlend 4-18-38 Tomato & Vegetable Fertilizer is a super concentrated, 100% water-soluble powder designed specifically for hydroponic and soil-grown tomatoes and vegetables. Available in bulk sizes, it delivers a precise nutrient balance with essential trace minerals, ensuring robust plant growth and high yields favored by commercial gardeners.

Specifications

ASIN	B071HB13XR
Best Sellers Rank	#34,224 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #865 in Garden Fertilizers
Brand Name	MasterBlend
Coverage	Medium
Customer Reviews	4.6 4.6 out of 5 stars (472)
Item Form	Powder
Item Weight	16 ounces
Manufacturer	MasterBlend
Mixing Ratio	12:6:12
Model Number	MASTERBLEND 4-18-38 (1 POUND)
Number of Items	1
Number of Packs	3
Part Number	MASTERBLEND 4-18-38 (1 POUND)
Specific Uses For Product	Hydroponic
Target Species	tomatoes and vegetables
UPC	600150826019
Unit Count	16 Ounce

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Excellent communication throughout the order process. Product is perfect.

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223 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered 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 Romania.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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Received my product in pristine condition. Great service overall.

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