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Item #:
21399273
MasterBlend 4-18-38 Fertilizer Combo Kit (2.5 Pounds)
Item #:
21399273
€ 41
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Only 12 items left in stock.
Order now and get it around Friday, July 17
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The MasterBlend MASTER KIT, contains all 3 concentrated dry powdered and water soluble components needed for the recommended recipe
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What Stands Out
Balanced Nutrients
MasterBlend 4-18-38 provides a precise nutrient ratio ideal for fostering vibrant plant growth, ensuring lush foliage and abundant fruit yields, making it perfect for both beginners and experienced gardeners.
User-Friendly Kit
This combo kit includes everything you need for easy mixing and application, empowering users to achieve optimal results without hassle, making it accessible for anyone looking to enhance their gardening experience.
Versatile Usage
Designed for hydroponics and soil gardening, MasterBlend’s versatility enables it to cater to various plant types, ensuring maximized growth potential and value, addressing diverse gardening needs effectively.
Product Details
- Tired of looking for the individual components (MasterBlend 4-18-38, Calcium Nitrate 15.5-0-0, Epsom Salt (Magnesium Sulfate) for the ultimate MasterBlend fertilizer recipe? Look no further. We have done the work for you. The MasterBlend MASTER KIT, contains all 3 concentrated dry powdered and water soluble components needed for the recommended recipe in the proper amounts, so you can get exactly what you need in one place and the hassle of finding the different components on your own. The classic MasterBlend recipe calls for 12 g MasterBlend, 12 g Calcium Nitrate, and 6g Epsom Salt for 5 gallons of nutrient solution, where each component is mixed into the water individually. (DO NOT BUY KITS THAT ARE PRE-MIXED! Nutrient lockout will occur and will be left as precipitates in your water)We have packed the MasterBlend Master kits in larger quantities to provide you with a better value in a one-stop kit. MasterBlend 4-18-38 Master Kit (3 Separate Components in correct amounts) Contains MasterBlend 4-18-38, Calcium Nitrate 15.5-0-0, and Epsom Salt (Magnesium Sulfate) Used by professionals worldwide for optimum plant growth 100% Water Soluble for easy plant uptake Packed by weight in a 1/1/0.5 ratio based off the MasterBlend recipe of 12g MB, 12g CN, and 6g ES.
| Npk ratio | 4-18-38 |
| Fertilizer type | Synthetic |
| Form | Crystals, Granules, Pellets |
| Rec. use | Plant |
| Brand | Masterblend International |
| Rec location | Indoor, Outdoor |
| Plant category | Vegetables |
| Plant name | Tomato, Vegetable |
| Product line | MasterBlend |
| Size | 2.5 lbs |
| Weight | 2.5 lbs (1.13 kg) |
| Product net content uom | Pound |
| Manufacturer | MasterBlend |
| Piece count | 3 |
| Package Weight | 3 Pound |
Who Should Buy?
-
Hydroponic Growers
Ideal for hydroponic gardeners seeking an all-in-one nutrient blend to support healthy plant growth and fruiting.
-
Vegetable Farmers
Benefits vegetable farmers looking for a balanced nutrient solution to enhance crop yield and overall plant health.
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Indoor Gardeners
Great for indoor plant enthusiasts wanting to provide their plants with essential nutrients in a controlled environment.
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Organic Farmers
Not suitable for organic farming practices as it contains synthetic nutrients that may not meet organic standards.
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Flowering Plants
May not provide the specific nutrient ratios needed for optimal blooming in flowering plant varieties.
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Aquatic Gardens
Not recommended for aquatic gardening as it could harm aquatic life or disrupt the water pH balance.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
Are the components pre-mixed in the kit?
Answer: No, the components are not pre-mixed in the kit. Mixing them individually in the recommended ratio ensures proper nutrient uptake and prevents nutrient lockout. -
Question:
Can I use this fertilizer for all types of plants?
Answer: Yes, the MasterBlend fertilizer is suitable for use on all types of plants. -
Question:
What is the advantage of buying the Master Kit?
Answer: The Master Kit provides a convenient one-stop solution, saving you the hassle of searching for and purchasing the individual components separately.
Masterblend International Garden Chemicals & Treatments Editorial Review
The MasterBlend 4-18-38 Fertilizer Combo Kit has received mixed reviews. While some customers appreciate the fast delivery and the effectiveness of the product in growing healthy plants, there have been concerns about the packaging and the size of the product not matching the advertised picture. One customer reported a hole in the Calcium Nitrate bag, causing a mess during delivery. Overall, if you're looking for an efficient fertilizer for your plants, the MasterBlend 4-18-38 Fertilizer Combo Kit may work for you, but be aware of the possibility of packaging issues and the size potentially being smaller than expected.
Customer Reviews & Ratings
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Pros
- Fast delivery
- Effective in growing healthy plants
Cons
- Product size may be smaller than advertised picture
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
€ 41
Order now and get it around Friday, July 17
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 12 items left in stock.
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
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Fastest cross-border delivery
Features & Benefits
- The MasterBlend MASTER KIT contains all 3 necessary components for the recommended fertilizer recipe
- Used by professionals worldwide for optimum plant growth
- 100% water soluble for easy plant uptake
- Available in different quantities – 2.5 Pound Kit, 12.5 Pound Kit, and 25 Pound Kit
- Packed by weight in a correct ratio to ensure accuracy in mixing
- Eliminates the hassle of finding and buying individual components separately