MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk
Best professional-grade nutrient system for serious hydroponic and garden growers.
Elevate your plant growth with the MASTERBLEND 4-18-38 Complete Combo Kit. This all-in-one solution provides the three essential dry, water-soluble components for the professional MasterBlend fertilizer recipe. It includes MasterBlend 4-18-38, Calcium Nitrate (15.5-0-0), and Epsom Salt (Magnesium Sulfate), carefully packaged separately to ensure proper mixing and prevent nutrient lockout. Designed for optimum plant development, its 100% water-soluble formulation guarantees efficient nutrient uptake. This convenient kit simplifies your gardening routine, offering a reliable, professional-grade nutrient regimen for healthier, more vibrant plants.
$24.99
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4425
#50 in Fertilizers
Price vs Category Average
-59%
Below average
NPK Ratio
41838
/ --
Who it's for
- Budget-conscious cultivators managing large-scale hydroponic setups
- Home gardeners aiming for maximum tomato and pepper yields
- Serious growers seeking a complete, deficiency-free nutrient profile
Who should skip it
- Casual gardeners preferring simple, ready-to-use liquid fertilizers
- Traditional soil growers needing a more compatible nutrient solution
- Gardeners lacking climate-controlled, dry storage space
Performance breakdown
Nutrient Precision
Professional-grade formulation ensures exact mineral ratios for optimal plant development.
Solubility Efficiency
Fully water-soluble powder eliminates clogging in irrigation and hydroponic systems.
Ease of Mixing
Separate components prevent nutrient lockout but require manual measuring for accuracy.
Growth Versatility
Highly effective across diverse crops, from leafy greens to heavy-blooming tomatoes.
System Reliability
A proven, industry-standard regimen trusted by commercial growers for consistent results.
Application Convenience
All-in-one kit simplifies sourcing while maintaining high-performance nutrient standards.
Key Specs
NPK Ratio
4-18-38
Kit Components
MasterBlend 4-18-38, Calcium Nitrate (15.5-0-0), Epsom Salt (Magnesium Sulfate)
Solubility
100% Water Soluble
Package Weight
2.5 Pounds
Mixing Ratio
12g MB : 12g CN : 6g ES per 5 gallons
Application Method
Soil Drench
Fertilizer Form
Water Soluble Powder
Release Type
Quick Release
Features
- Complete 3-part nutrient system
- Prevents nutrient lockout
- Professional-grade formulation
- 100% water-soluble for easy uptake
- Simplifies nutrient purchasing
- Available in bulk quantities
- Trusted by growers worldwide
- Convenient all-in-one solution
What customers say
Masterblend is trusted for professional grade results, especially in boosting yields for fruiting plants like tomatoes. Growers value the precise nutrient balance and the formula's reliability. The bulk kit offers outstanding value, providing a cost effective solution for serious gardeners and small commercial operations seeking consistent, high quality plant nutrition. This product delivers on its promise of excellent plant nourishment.
Know before you buy
The components are packaged separately to prevent chemical reactions that can cause nutrient lockout. Mixing them together in dry form can lead to precipitation, making the nutrients unavailable to your plants once dissolved.
Yes, because this formula is 100% water-soluble, it is highly effective for both hydroponic systems and traditional soil-based gardening. It is designed to be delivered as a liquid feed, ensuring rapid nutrient uptake in any medium.
For a standard application, mix 12 grams of MasterBlend 4-18-38, 12 grams of Calcium Nitrate, and 6 grams of Epsom Salt into 5 gallons of water. Always dissolve the MasterBlend first before adding the other components to ensure proper solubility.
This professional-grade formula is specifically balanced for high-performance plant development. While it is excellent for the vegetative and flowering stages, you should monitor your plants' specific needs, as the high potassium content is particularly beneficial for fruit and flower production.
The MasterBlend 4-18-38 kit is a complete nutrient system that provides the essential macro and micronutrients required for healthy plant growth. In most cases, no additional fertilizers are necessary, though you should always adjust your pH levels to ensure optimal nutrient absorption.
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