Grow Tent Setup — Step by Step
Setting up your grow tent correctly from the start prevents most common beginner problems. This guide walks you through every step.
Choosing the Right Tent Size
For 1–2 plants: 60x60cm or 80x80cm. For 2–4 plants: 100x100cm or 120x120cm. For 4+ plants: 120x240cm or larger. Height matters too — most tents are 140–200cm tall. Sativa and hybrid strains can double in height during flowering, so a taller tent gives you more flexibility.
Positioning Your Tent
Place your tent in a room with stable temperature (18–28°C ideal). Avoid garages that get very cold in winter or attics that overheat in summer. You need access to a power outlet and ideally somewhere to run your exhaust ducting. The tent does not need to be in a perfect location — just stable temperature and accessible.
Setting Up Ventilation
Proper airflow is critical. You need an inline fan pulling air out through a carbon filter at the top of the tent, and passive intake holes at the bottom letting fresh air in. A rule of thumb: your inline fan should exchange the tent air every 1–3 minutes. For an 80x80x180cm tent (about 115L), a 4-inch (100mm) inline fan is sufficient.
Hanging Your Light
Hang your light from the tent poles using the included ratchet hangers. LED lights have a recommended hanging height in their manual — typically 40–60cm above seedlings and 30–45cm above plants in flower. Make sure the light covers your entire canopy evenly. Most LEDs have a coverage chart in their documentation.
Environment Monitoring
Get a cheap digital thermometer/hygrometer (€5–10) and place it at canopy level. Target ranges: seedling stage 20–25°C at 60–70% humidity, vegetative 22–28°C at 50–70%, flowering 20–26°C at 40–50%. High humidity in late flower causes bud rot — the number one indoor growing disaster.
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Quick Tips
- Seal all light leaks with black tape — even small leaks during dark periods can cause photoperiod plants to re-veg.
- Run your intake ducting along the floor where air is coolest.
- Label your timer settings and keep a photo record of your setup for troubleshooting.