Cal-Mag: When It Is Needed — and When It Destroys a Grow (Truth, Myths and LED Traps)
Cal-Mag in cannabis growing without myths: when it is truly needed, when it harms plants, how LEDs and VPD affect calcium and magnesium uptake.
Author: Manolo MJF
Hey, I’m Manolo from MJF – your go-to grow buddy 🌿. I blog about everything cannabis cultivation: from sprouting your first seed to harvesting top-shelf buds. Whether you're growing in a closet or a custom-built growroom, I’m here to share tips, tricks, and tried-and-true methods to keep your plants (and you) thriving. Light it up with knowledge and let’s grow together! 💡🌱 #GrowWithManolo
Posts by Manolo MJF:
Why the Plant Does Not Absorb Nutrients: Transpiration, Roots and Nutrient Lockouts in Practice
Why cannabis plants do not absorb nutrients: transpiration, roots and nutrient lockouts explained step by step, with practical diagnosis and solutions.
VPD in Cannabis Growing: How It Really Works, How to Measure It, and How to Use It in Practice
VPD in cannabis cultivation explained simply: how to measure it, correct ranges for veg and flower, a clear VPD table, and how to fix problems step by step.
Ozone in the Growroom: A Powerful Tool for Odor Control or a Risky Terpene Killer? The Truth About Ozone in Stealth Growing
Ozone in the growroom: effective odor control, risks for plants and humans, safe-use rules and stealth techniques for home cannabis cultivation.
Autonomous Grows: Sensors, Automatic Feeding and AI-Grow Management in Home Cannabis Cultivation
Dec 01, 2025Manolo MJF - Categories: Watering , Lighting , Ventilation , Fertilizing , Miscellaneous
Autonomous grows: smart irrigation, EC/pH sensors, mobile LED and ventilation control, and AI-powered grow management for home cannabis cultivation.
Vertical and Multi-Layer Growing — How to Double Your Yield Without Increasing Space
Vertical and multi-layer cannabis growing. How to double your yield in the same space by controlling climate, VPD, light and plant stability.
Stealth Growing – a Quiet Growbox, Happy Neighbors and a Peaceful Mind
Stealth cannabis growing: ultra-quiet fans, modern carbon filters, noise reduction, smell control, safe wiring and discreet grow tent setups.
Flush vs. No Flush — The Real Truth in 2025
Flush or no flush? The latest facts for 2025. Complete analysis, tests, myths, impact on taste, ash, terpenes and bud quality. Truth without marketing.
Saving Cannabis Plants After Heat and Light Stress – A Complete Grower’s Guide
How to rescue cannabis plants after heat and light stress? Complete 2025 guide: symptoms, diagnosis, indoor/outdoor recovery steps and costs in EUR.
Autoflowering – a complete, extended guide for growers in Europe (indoors and outdoors)
An extended guide to autoflowers: life cycle, nutrients, training, lighting, mistakes, yields, European outdoor cycles, costs and practical advice.
Sustainable and Energy-Efficient Indoor Growing – How to Reduce Costs and Your Carbon Footprint
How to lower electricity bills in a grow room? A guide to sustainable, energy-efficient indoor cultivation: LEDs, ventilation, heat recovery, parameters and costs.
How to Maximize the Terpene Profile in Cannabis Cultivation – Flavor, Aroma and Potency
How to boost the aroma and flavor of cannabis? Proven methods to maximize terpenes: lighting, temperature, drying, genetics and plant feeding.
We regularly drop posts here about growing marijuana. Swing by often if you're as into it as we are.
Mary Jane Farm
