Quick answer: Start with a single deep water culture (DWC) bucket in a closet or spare room. You need one 5-gallon light-proof reservoir, an air pump with a stone, a net pot filled with rinsed clay pebbles, a pH meter, an EC meter, and a veg-stage LED. Hold the water at 65 to 72°F, keep pH between 5.5 and 6.5, run 18 hours of light and 6 hours of dark, and swap the reservoir every 7 to 10 days. That rig carries one plant from seed to harvest with the fewest parts that can fail.
Prerequisites
- Written confirmation of your state and local rules on home cultivation, plant counts, and container limits.
- A space with a floor drain or a wet vac, a dedicated 15-amp circuit, and a door that closes.
- A budget line for a pH meter and EC meter. Test strips are too coarse for hydroponics.
- Water report or a tap-water test, so you know your starting hardness before you add nutrients.
- Roughly 6 square feet of floor space per plant at maturity, plus 24 inches of headroom above the canopy.
Step-by-step setup
- Verify the current cultivation rules that apply to your address before you buy anything.
- Choose a deep water culture bucket for the first run. It has no pumps, timers, or sprayers to clog.
- Buy a reservoir that blocks all light. Wrap any translucent bucket in black-and-white poly film.
- Rinse the clay pebbles under running water until the runoff clears, then soak them for an hour.
- Fill the reservoir with tap water and let it sit 24 hours so chlorine off-gasses.
- Add nutrients at one-quarter of the label strength for seedlings and cuttings.
- Measure pH and adjust to 5.8, then measure EC and record both numbers in a log.
- Suspend the air stone at the bottom of the bucket and confirm steady bubbling before a plant goes in.
- Start the seed in a damp rockwool cube, keep it warm and dark until the taproot shows, then move it under light.
- Set the LED 24 to 36 inches above the seedling and run the veg schedule of 18 hours on and 6 hours off.
- Set the net pot so the bottom inch sits in the solution and the crown stays dry.
- Run an oscillating fan across the canopy, not straight into the root zone.
Daily and weekly routine
- Check pH and EC at the same time each day and log both readings.
- Top off with plain water when the level drops, then re-check EC.
- Change the full reservoir every 7 to 10 days with fresh nutrient solution.
- Inspect roots for brown slime or a sour smell at each change.
- Prune lower leaves that block airflow once the plant fills the space.
Mistakes that end first runs
- Mixing full-strength nutrients for a seedling and burning the root tips.
- Letting reservoir temperature climb past 72°F, which drops dissolved oxygen and invites root rot.
- Skipping the EC meter and guessing at concentration.
- Switching to 12 hours of dark too early and stalling vegetative growth.
- Adding a second plant before the first run reaches harvest.
What the first run looks like
Expect the seedling to establish in 7 to 10 days, rapid vegetative growth from week 3 through week 6, and a stretch in the first two weeks after you flip the light schedule to 12 hours on and 12 off. Add a carbon filter before that flip, not after. Keep the log from run one. It becomes the baseline for every reservoir after it.