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MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5 Pound Kit)

Brand: ZYZYZK

4.7 2,802 ratings

$24.98

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Brand	ZYZYZK
Item Weight	10 Pounds
Item Form	Powder
Coverage	Full
Liquid Volume	5 Liters

About this item

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

Customer ratings by feature

Easy to use

4.7

Value for money

4.5

Flavor

4.5

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Product information

Brand

ZYZYZK

Item Weight

10 Pounds

Item Form

Powder

Coverage

Full

Liquid Volume

5 Liters

Specific Uses For Product

Plant Growth

Item Weight

10 pounds

Manufacturer

MasterBlend

ASIN

B072F2BL9D

Item model number

MASTERBLEND-COMBO_2.5LB-KIT

Customer Reviews

4.7 2,802 ratings

4.7 out of 5 stars

Best Sellers Rank

#4,164 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#208 in Garden Fertilizers

Is Discontinued By Manufacturer

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Product Description

Tired of looking for the individual components (MasterBlend 4-18-38, Calcium Nitrate 15.5-0-0, Epsom Sale (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, without having to pay separate shipping can the hassle of finding the different components on your own. The classic MasterBlend recipe calls for 12g MasterBlend, 12g 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. Available in quanties from 1lb to 75 pounds. Packed in clear bags by PowerGrow Systems (authorized MasterBlend distributor). The 2.5 Pound Kit contains: 1LB MasterBlend, 1LB Calcium Nitrate, 0.5LB Epsom Salt. The 12.5 Pound Kit contains: 5 LBS MasterBLend, 5 LBS Calcium Nitrate, 2.5 LBS Epsom Salt. The 25 Pound Kit contains: 10 LBS MasterBlend, 10 LBS Calcium Nitrate, and 5 LBS Epsom Salt. The 75 Pound Kit contains: 25 LBS MasterBlend, 25 LBS Calcium Nitrate, 14.5 LBS Epsom Salt.

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	This Item MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5 Pound Kit)	Recommendations MasterBlend 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (25 Pounds)	dummy MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (5 Pound Kit)	dummy Calcium Nitrate 15.5-0-0 Fertilizer Bulk Pricing (5 POUNDS)	dummy PREMIER HORTICULTURE 6009211NPBX Myke 0.9 Quart Flower	dummy Jack's 15-0-0 Calcium Nitrate 25 lb. Fertilizer - Part B (1)
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$24.98	$79.99	$32.98	-7% $15.75 List: $16.99	$21.33	$58.42
Delivery	—	—	—	Get it Mar 26 - 27	Get it Apr 1 - 4	—
Customer Ratings	4.72,802	4.71,197	4.7825	4.71,770	4.78	4.7398
Easy to use	4.7	4.7	4.7	4.6	—	4.6
Value for money	4.5	4.5	4.4	4.5	—	4.2
Flavor	4.5	—	5.0	4.8	—	—
Sold By	BGS Supplies USA	BGS Supplies USA	BGS Supplies USA	BGS Supplies USA	BundleStop	Esbenshades Garden Center
weight	10 pounds	25 pounds	5 pounds	5 pounds	—	25 pounds
form	Powder	Liquid	Powder	—	Liquid	Powder
coverage	Full	Medium	Full	Full	Full	25
liquid volume	5 liters	—	5 gallons	—	1 quarts	—
specific uses	Plant Growth	Hydroponic	Plant Growth	—	Gardening	Hydroponic

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Customer reviews

4.7 out of 5

2,802 global ratings

How customer reviews and ratings work

Customers say

Customers like the performance, ease of use, and mixing of the fertilizer. They mention that it works well in their hydroponic set-ups, the instructions are self-explanatory, and it's great for newbies. They also like the nutrients, quality, and appearance. That said, opinions are mixed on the size.

AI-generated from the text of customer reviews

102 customers mention98 positive4 negative

Customers are satisfied with the performance of the fertilizer. They mention it does the job really well, is a solid performer, and is able to produce amazing results with rockwool cubes and Masterblend. Some customers also mention that it is easy to use and makes many excellent cucumbers.

"...I'm pleased with the results so far...." Read more

"...I'm growing squash, herbs, and peppers and am very pleased with the results...." Read more

"...used MasterBlend for several years and have found it to work well in my hydroponic set-ups. A little goes a long way." Read more

"...It puts roots down deep into the water and makes many excellent cucumbers...." Read more

53 customers mention53 positive0 negative

Customers are satisfied with the quality of the fertilizer. They mention that it makes their tomato plants grow like crazy, gives great yields, and produces in abundance. The resulting growth is astonishing, and they are happy with the results. Overall, customers are happy about the product and recommend it to others.

"...The growth of the cucumber is amazing! It puts roots down deep into the water and makes many excellent cucumbers...." Read more

"...Everything grew very well and fast. It goes a really long ways. This is the stuff you need" Read more

"...Switched to this formula and it was like night and day. Much superior growth with all else being equal!..." Read more

"This is the best combination of water-soluble fertilizer and worked great on my indoor lettuce farm." Read more

39 customers mention30 positive9 negative

Customers generally like the value of the fertilizer. They say it's a great value, extremely economical to use, and in good condition.

"The package arrived quickly after ordering and in good condition. The nutrient concentration is appropriate for Kratky's hydroponic system." Read more

"...So far it's been working wonderful. Quick easy and way less expensive than the previous nutrients I was using." Read more

"Began using this a short while ago. Find it to be extremely economical to use...." Read more

"Bit expensive." Read more

35 customers mention32 positive3 negative

Customers find the fertilizer easy to use. They say the instructions are self-explanatory, the directions and measurements are straight forward, and it is great for newbies. They also say the product is easy to purchase and very pleased with it.

"...It was an enormous change.It is very easy to use ONCE you do the math for small quantities like in my case." Read more

"So easy to use and the instructions are simple to follow. The perfect amount of nutrients for my plants." Read more

"...So far it's been working wonderful. Quick easy and way less expensive than the previous nutrients I was using." Read more

"...The instructions on the package are self-explanatory. The results were awesome! All my transplants began growing roots and beautiful green leaves...." Read more

20 customers mention20 positive0 negative

Customers find the fertilizer easy to mix. They mention that the instructions are easy to follow, and the product is a good blend for most plants. Some say that the product makes a great blend for their hydrophonic setup.

"...It's not a pain to mix; it just takes a little patience...." Read more

"Easy to mix up 5 gallon instructions on the bag I have 5 gallon buckets all over my yard with 2 foot tall tomato plants coming out of them right now..." Read more

"My lettuce and Pak Choi grow like crazy when I use this. Mixing is easy. I like to use 2, 5 gallon containers to mix." Read more

"Great fertilizer! This is easy to mix up and my hydro plants all seem to love it. The price per usage is so cheap compared to other brands...." Read more

17 customers mention12 positive5 negative

Customers like the nutrients. They mention that they are a great nutrient solution for hydroponics, solid, and fail proof if you do it right. They also say that their marijuana plants love it and that they no longer buy expensive nutrients and spend 100's of dollars.

"...The nutrient concentration is appropriate for Kratky's hydroponic system." Read more

"...The perfect amount of nutrients for my plants." Read more

"...That generally comes from one of, or a combination of two things: Excess nitrogen, or lack of calcium...." Read more

"...The nutrients are solid and fail proof if you do it right...." Read more

9 customers mention9 positive0 negative

Customers are satisfied with the appearance of the fertilizer. They mention that their basil plants look amazing, have very meaty dark green leaves, and are very crisp and juicy. They also appreciate the deep green blue hue of the tomatoes and the lush, fast growth of their vegetables.

"...All my transplants began growing roots and beautiful green leaves. However, after one month exactly, I do not see any fruit...." Read more

"...Didn’t foliar feed with it at all. Tomatoes deep green blue hue lots of foliage growth...." Read more

"...They are all black and rotten in the core of the tomato. The outside looks great (a few have brown spots on the bottom but most are beautiful),..." Read more

"...I get fast growth, with very meaty dark green leaves, which taste wonderful being very crisp, and juicy." Read more

12 customers mention5 positive7 negative

Customers are mixed about the size of the fertilizer. Some mention that it's large and produces large vegetables and spices, while others say that it is small and does not quite measure up.

"We got this but think it’s way smaller then what it should be. The picture makes it look way larger. It’s great for one plant not two." Read more

"...Again, the plants are growing VERY large and are producing TONS of tomatoes...." Read more

"...Cucumbers grow great! Tons of green peppers but they don't get really big. I have like ten peppers on each plant." Read more

"...I also did a couple basil plants this summer and they are huge." Read more

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Top reviews from the United States

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SLD

Great for hydroponics

Reviewed in the United States on March 10, 2024

Size: 2.5 Pound KitVerified Purchase

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It's my first time to try hydroponics and this product was highly recommended by my friend. I'm pleased with the results so far. In a couple of weeks, I was able to grow some lettuce and bok choy and I'll be harvesting the vegetables in 2-3 wks.

One person found this helpful

Helpful

MagicalPoptart

I've been using this stuff for about a month now...

Reviewed in the United States on March 12, 2024

Size: 2.5 Pound KitVerified Purchase

Came exactly has advertised. I'm growing squash, herbs, and peppers and am very pleased with the results. Being new to hydroponics, I bought this stuff due to its reputation within the hydroponic community. I bought the 2.5lb version of this product and am surprised how long a way it goes.

One person found this helpful

Helpful

Sandra Sibilskis

a big change in results!!

Reviewed in the United States on January 16, 2024

Size: 12.5 Pound KitVerified Purchase

I have a hydroponic garden since the last 6 months, and I could see results only in the slowly growth of the plants. Now, I changed the mix in the water using MASTERBLEND 4-18-38 Combo kit and day by day the results turn into fruits in the garden. It was an enormous change.
It is very easy to use ONCE you do the math for small quantities like in my case.

3 people found this helpful

Helpful

Kaunakakai resident

The package of MasterBlend arrived quickly and in good condition.

Reviewed in the United States on December 8, 2023

Size: 12.5 Pound KitVerified Purchase

The package arrived quickly after ordering and in good condition. The nutrient concentration is appropriate for Kratky's hydroponic system.

4 people found this helpful

Helpful

M. Ames

Product is good. Shipping department made a mistake.

Reviewed in the United States on December 22, 2023

Size: 12.5 Pound KitVerified Purchase

I did not receive my full order and had to contact the company through Amazon. They apologized and sent out the rest of my order. I have used MasterBlend for several years and have found it to work well in my hydroponic set-ups. A little goes a long way.

One person found this helpful

Helpful

S_Richards

Excellent Combo Kit Fertilizer for Cucumbers In A Water Barrel

Reviewed in the United States on June 1, 2022

Size: 2.5 Pound KitVerified Purchase

I have a 55 gallon blue plastic water barrel. I started a cucumber plant in a 2" container. I filled the container with 55 gallons of water and the correct proportions of this Master Blend Fertilizer just to 1/8" of the bottom of the Cucumber Container.. one has to leave enough air space for the plant to breathe.

The growth of the cucumber is amazing! It puts roots down deep into the water and makes many excellent cucumbers. Here is the ratio of the mixture you need for cucumbers in a 55 gallon barrel.

Ingredient #1 Master Blend 4-18-38 (120 Grams for 55 Gallon Drum)
Ingredient #2 Calcium Nitrate 15.5-0-0 (120 Grams for 55 Gallon Drum)
Ingredient #3 Epson Salts (60 Grams)

Note: Epson salts are HARD TO DISSOLVE. Use hot water in a separate pail to dissolve it. Next, mix all 3 ingredients together. Fill a 55 gallon barrel about 1/2 full and pour in the fertilizer mixture. Fill the barrel up to ONLY 1/8" into the transplanted cucumber container. It works in a 2" BUNG HOLE or if you use a 3 or 4 inch container, you'll have to TIGHTEN both Bung holes and then cut a hole to fit the size of your container. There is enough water and fertilizer to feet the cucumber plant for the rest of its producing life. Use a trellis to make it grow upwards to make it easy to gather your cucumbers.. else the plant will flow over the side of the barrel and onto the ground. Note also NEVER use a WHITE barrel. These barrels do NOT stop UV ray's and will form algae. If that is all you can get, paint it blue or black. The blue barrels have UV inhibitors built into them and will last for many years.

47 people found this helpful

Helpful

Eric

Grew cabbage, green beans, and cherry tomatoes in record time

Reviewed in the United States on December 11, 2023

Size: 12.5 Pound KitVerified Purchase

Used this to fertilize green acre, bush beans, and Baxter cherry tomatoes. I had harvestable green beans in 5 weeks. I was not pleased with the taste though. Unless your a commercial farmer, I feel a 1lb kit will last for many, many seasons.

One person found this helpful

Helpful

Taira Landa

Perfect for hydroponics

Reviewed in the United States on November 18, 2023

Size: 12.5 Pound KitVerified Purchase

So easy to use and the instructions are simple to follow. The perfect amount of nutrients for my plants.

2 people found this helpful

Helpful

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MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5 Pound Kit)

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MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5 Pound Kit)

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Customer Review: Great for hydroponics

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