A Deficiency That Doesn’t Exist – How You Create Nutrient Problems Yourself

False nutrient deficiencies are a common mistake in cannabis cultivation. Learn what nutrient lockout really is, how pH, VPD, and temperature imitate deficiencies, and why adding fertilizer often makes the problem worse.

LEDs Are Unforgiving. Why modern grow lights expose every grower’s mistake

LED grow lights expose every mistake in cannabis cultivation. Learn what PPFD and VPD really mean, why LEDs cause stress and false deficiencies, and why old HPS feeding routines no longer work.

The Plant Isn’t Drinking, Even Though There’s Water Transpiration, the root zone, and the biggest illusion beginners fall for

Plant not drinking despite wet soil? Learn how transpiration, root oxygen, and LEDs cause overwatering symptoms. Understand the difference between thirst and excess water and save your grow.

Why Do Cannabis Leaves Curl? Taco, claw and canoe – how to read leaves and tell stress from deficiencies

Curling cannabis leaves? Learn what taco, claw, and canoe really mean. A beginner-friendly guide to telling environmental stress from nutrient issues — without ruining your grow.

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.

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.

IPM in home cannabis grows — A plan for pests before they appear

Integrated Pest Management (IPM) in home cannabis cultivation is a plan for pests before they even show up. Learn how to use product rotations (without spinosad), predatory mites and growroom hygiene, all adapted to European realities.

Cal-Mag: shield or placebo?

More and more growers use Cal-Mag when growing under LEDs and with filtered water. But does every plant really need it? Find out when calcium and magnesium supplementation is a lifesaver and when it can do more harm than good.

Cannabis leaves in coco and hydro — complete diagnostics (pH/EC, tables and charts)

How to read cannabis leaves in coco, DWC/RDWC, aeroponics, rockwool and other media. pH/EC ranges, the most common symptoms (Ca/Mg, K, Fe
), quick fixes and “false alarms” (root oxygen, solution temperature, spray nozzles). Tables + downloadable charts.

Foxtails: fix or ignore? When it’s a problem, and when it’s “just the cultivar”

Foxtailing in cannabis: when it’s a light/heat problem vs. just the cultivar. How to stop it in 24–48 h and protect density, flavor, and resin.

Hermies & nanners: identification, prevention, and quick rescue of your grow

Where do hermaphrodites and “nanners” in flower come from? Most common causes (light leaks, stress, genetics), simple prevention (dark test, timer, T/RH), how to identify on the plant, and a rescue plan: removal, misting, isolation, when to chop and when to finish with minimal seeds.