In hydroponics the roots grow in water or an inert medium and get everything from the nutrient solution. Here are the main systems, the values to hold and where to start.
The best soil for cannabis drains well, lets air reach the roots and has a pH between 6.0 and 7.0. Here is how to choose between light mix and all mix, how much perlite to add and how to reuse soil.
How high to hang your LED at each stage, which PPFD and DLI values to aim for, how to use the dimmer and how to measure light with a PAR meter, lux meter or app.
VPD combines temperature and humidity into a single value in kPa. Here are the values for each stage and a ready-made chart, calculated with leaves 2 °C cooler than the air.
How to choose, fit and maintain a grow tent carbon filter so the smell of flowering plants does not bother neighbours or housemates.
Harvest starts before the first cut: drying room ready, clean tools, big fan leaves removed. Here are the tools, cutting methods and the order of work on harvest day.
A rosin press separates resin with heat and pressure, without solvents. Indicative settings for flowers, dry sift and ice water resin, plus yield and safety.
Buds dry in the dark at 18–21 °C and 55–62% humidity for 7–14 days, until small stems snap. Here is how to set up the space and avoid mould.
Which nutrients to use in the vegetative stage and flowering, how to read a feeding chart and dose by EC in soil, coco and hydroponics.
Which temperatures your grow tent needs at each stage, by day and by night, and how to keep them stable in summer and winter, roots and water included.
How to work out the airflow your grow tent exhaust fan needs, install it with a filter and ducting, create the right negative pressure and cut the noise.
With low stress training you bend and tie down branches without cutting them, so every tip gets the same light. When to start, what to use, LST on autoflowers and the mistakes to avoid.
Why weed leaves curl down or up or droop, how to tell thirst from overwatering, and a quick checklist to find the cause and fix it.
How many hours of light each stage needs, how to switch to 12/12, why darkness must be total during flowering and which timer or controller to choose.