Hydroponics for cannabis: getting started with soilless growing

Hydroponic cannabis cultivation offers advantages over traditional soil cultivation:

**Advantages of hydroponics:**

- 20-30% faster growth

- Higher yields possible

- Precise nutrient control

- No pests from the soil

- Cleaner, less odourful

- Reusable components

**Hydroponic systems for cannabis:**

*Deep Water Culture (DWC):*

- Roots directly in oxygen-rich nutrient solution

- Inexpensive and easy for beginners

- One container per plant

- Air pump and air stone essential

*Ebb & Flow (Flood & Drain):*

- Periodic flooding of the root area

- Timer controls watering cycles

- Multiple plants per system possible

- Good balance of nutrients and oxygen

*NFT (Nutrient Film Technique):*

- Thin nutrient film flows past the roots

- Continuous supply

- Space-efficient for many small plants

- Susceptible to pump failure

*Drip systems:*

- Targeted nutrient supply via drippers

- Waste-to-drain or recycling possible

- Very controllable

- Ideal for larger plants

**Basic equipment:**

- Water reservoir (20-100 litres)

- Water pump

- Air pump + air stone

- pH/EC measuring devices

- Pipes and fittings

- Growing medium (expanded clay, rock wool, perlite)

**Nutrient management:**

- Use special hydro fertilisers

- A+B solutions for different phases

- pH 5.5-6.5, EC according to growth phase

- Complete replacement every 1-2 weeks

**Common mistakes made by beginners:**

- ignore pH fluctuations

- EC values too high (over-fertilisation)

- Insufficient aeration of the nutrient solution

- Dirty systems (algae, bacteria)

- Forgetting backup pumps

**Recommendation for getting started:**

- Start with DWC system (1-2 plants)

- Autoflower varieties for the first trial

- Invest in high-quality pH/EC measuring devices

- Slowly approach optimum values