White Widow – one of the most recognizable strains

White Widow – scene icon: snowy resin, clear “click” in the head, and classic pine–pepper–citrus bouquet. Profile, phenotypes, essence.

Lighting for Cannabis: How to Calculate the "Light Diet" from A to Z

PPFD, DLI, PPF, and PPE explained "in simple terms." Specific ranges for cannabis, calculation examples, and practical setup tips.

The Most Common Germination Problems and How to Understand Them

Why seeds fail to start? A tour of common slip-ups: moisture, oxygen, substrate structure, hygiene, “helmet,” etiolation, storage.

Critical Kush – an indica strain distinguished by an intense genetic profile

Critical Kush—an anchor among indicas. Dense, heavy flowers, hashy-woody spice, and deep, evening “wrap-around” calm.

AK47 – a legend among strains, known for its power and intense aroma

AK47 – a characterful classic. Peppery-pine nose, trichome “frost,” and a bright, energetic vibe that built its legend.

How to Look After Your Health When Working on a Grow

A growroom isn’t a spa. Air, light, chemicals, noise, CO₂, ergonomics—simple habits that keep your body and mind in shape.

Hydroponic Substrates – Which Should You Choose?

Rockwool, LECA, coco, perlite, phenolic foam… Match the medium to DWC, NFT, flood & drain, or drip so it helps—not hinders.

Which Additives Improve Substrate Structure?

Perlite, pumice, coco, biochar, bark, zeolite & more. What to add, which particle size, and what % so the mix “breathes” yet holds water.

How to Prepare a Mother Plant for Cloning?

A ready mother = fast rooting, uniform starters, fewer losses. Timeline, parameters, diet, hygiene, and a tools checklist.

Monitoring and Supplemental CO₂ – Is It Worth the Investment?

Is adding CO₂ to an indoor grow worth it? How to monitor, optimal ppm, gear, costs, safety, and the real return on investment.

When to Start and When to Stop Fertilizing?

When should you start fertilizing and when should you stop? This is one of the most common questions for new growers. Learn why seedlings don’t need full feeding yet, how nutrient demand gradually increases, and when it’s best to transition to bloom formulas and finally to flushing before harvest.

What Is EC and How to Measure It?

EC (Electrical Conductivity) is the electrical conductivity of the nutrient solution, a simple indicator of dissolved salts. Learn what EC really measures, how to properly calibrate and use an EC meter, typical ranges for vegetative and flowering stages, and how to avoid mistakes with temperature, bubbles, and hard water.