Aptus Massboost
Best nutrient booster for growers seeking larger, stronger flowering yields.
Aptus Massboost is a specialized plant booster designed to enhance fruit set and development by supplying essential secondary nutrients. It delivers Calcium and Magnesium, crucial for structural integrity and photosynthesis. Calcium strengthens cell walls for stout flowers and stems, while Magnesium is key to chlorophyll production for efficient energy conversion. Use during critical flowering weeks (3, 5, and 7) or as needed in the vegetative phase for robust plant growth.
$19.76
Owner Satisfaction
4.6
/ 5
Category Rank
1791
/ 4425
#1791 in Fertilizers
Price vs Category Average
-68%
Below average
Available in multiple sizes
1002505001520
/ ml, ml, ml, L, L, and L
Who it's for
- Commercial growers aiming for maximum harvest weight and flower density
- Hydroponic gardeners using automated irrigation systems prone to clogging
- Advanced cultivators seeking precise nutrient ratios for late-stage flower development
Who should skip it
- Budget-conscious hobbyists looking for affordable, entry-level nutrient solutions
- Inexperienced growers prone to over-fertilizing sensitive plant varieties
- Minimalist gardeners preferring simple, standalone nutrient programs
Performance breakdown
Nutrient Bioavailability
Mineral-based formula ensures rapid uptake for immediate plant structural support.
Flowering Efficacy
Targeted application schedule significantly boosts fruit density and flower development.
Solubility Performance
Highly water-soluble liquid concentrate prevents clogging in irrigation and feeding systems.
Deficiency Correction
Potent calcium and magnesium blend quickly resolves common leaf yellowing issues.
Application Versatility
Flexible dosing allows for precise adjustments across both vegetative and flowering stages.
Structural Reinforcement
Calcium content creates noticeably sturdier stems capable of supporting heavy yields.
Key Specs
Available in multiple sizes
100 ml, 250 ml, 500 ml, 1 L, 5 L, and 20 L
Contains Calcium (Ca) and Magnesium (Mg)
Application Rate (Flowering)
5-10 ml per 5 gallons
Application Rate (Vegetative)
2.5-5 ml per 5 gallons
Fertilizer Source
Mineral Based
Application Method
Soil Drench
Organic Certified
false
Season of Application
Spring, Summer, Fall
Features
- Prevents Calcium and Magnesium deficiencies
- Enhances fruit set and development
- Supports strong cell wall formation
- Maximizes photosynthesis
- Aids chlorophyll production
- Targeted flowering stage application
What customers say
Aptus Massboost earns high praise for its exceptional efficacy, consistently delivering noticeable improvements in flower density and overall harvest weight. Growers rely on this product for its dependable results, integrating it firmly into their feeding schedules. Although it carries a premium price, the significant increase in final yield confirms its excellent value proposition for those prioritizing maximum output. This nutrient is highly regarded for successfully boosting mass and density as promised.
Know before you buy
Aptus Massboost is a mineral-based booster designed to supply essential Calcium and Magnesium to your plants. It is specifically formulated to strengthen cell walls and support chlorophyll production, which helps improve fruit set and overall development.
For optimal results, apply Massboost during weeks 3, 5, and 7 of the flowering cycle. This targeted application ensures your plants have the necessary nutrients during critical phases of fruit development.
Yes, you can use Massboost during the vegetative phase to promote robust growth. The recommended application rate for this stage is 2.5 to 5 ml per 5 gallons of water.
This product is designed for use as a soil drench. Because it is a water-soluble liquid concentrate, it mixes easily into your irrigation water for direct root zone delivery.
No, Aptus Massboost is a mineral-based fertilizer. It is formulated for quick release to ensure plants receive immediate access to Calcium and Magnesium when they need it most.
Yes, Massboost is specifically designed to prevent and address Calcium and Magnesium deficiencies. By providing these secondary nutrients, it helps maintain structural integrity and efficient photosynthesis in your vegetables and flowers.
Still have a question?
Ask Hayley anything about this product before you decide.