Hydroponics is growing plants without soil, using nutrient solutions in water. The result: plants that grow up to 3 times faster, use 90% less water, and produce more in less space. This guide explains everything from scratch.
Why hydroponics?
- More speed: roots have direct access to nutrients, without spending energy searching for them in the soil
- More control: you decide exactly what and how much the plant eats
- Less water: water circulates and is reused (unlike soil irrigation where much is lost)
- No soil pests: by not using soil, you eliminate fungus gnats, harmful nematodes, and soil fungi
→ See hydroponic systems at Pachamama
The 5 most used hydroponic systems
1. Coco coir cultivation (the most popular for beginners)
Technically not pure hydro, but coco fiber is inert and works the same. You use pots with coco and water with nutrient solution several times a day. It's the system most similar to soil but with hydro advantages.
Difficulty level: ⭐⭐ · Initial investment: Low
→ See substrates and nutrients for coco
2. DWC (Deep Water Culture)
Roots hang directly in an oxygenated nutrient solution with an air pump. Simple system, very effective for large plants.
Difficulty level: ⭐⭐⭐ · Initial investment: Medium
→ See DWC systems
3. NFT (Nutrient Film Technique)
A thin film of nutrient solution continuously flows over the roots in inclined channels. Ideal for small plants or herbs (lettuce, basil).
Difficulty level: ⭐⭐⭐ · Initial investment: Medium
4. Drip system
The solution is applied directly to the roots through timed drippers. Easy to scale and very common in commercial production.
Difficulty level: ⭐⭐ · Initial investment: Medium
→ See drip systems
5. Aeroponics
Roots are misted with nutrient solution in the air. The most advanced technique with the highest yields, but also the most expensive and technical.
Difficulty level: ⭐⭐⭐⭐⭐ · Initial investment: High
What you need to start with hydroponics in Costa Rica
Basic equipment
- Hydroponic system (the one you choose from above)
- Water pump + timer
- Oxygenator / air pump (in DWC)
- pH meter — mandatory
- EC/TDS meter — mandatory
- Specific nutrients for hydro
→ See all hydroponic equipment
Hydroponic nutrients
In hydro, plants depend 100% on your solution. Nutrients must be completely soluble, without sediments. The most used lines:
- Canna Aqua — specifically designed for recirculation
- General Hydroponics FloraSeries — the most used line in the world in hydroponics
- Athena Pro — powdered, excellent for recirculating systems
Key parameters you must monitor
| Parameter | Ideal range (hydro) | Review frequency |
|---|---|---|
| pH | 5.5–6.2 | Daily |
| EC (Conductivity) | 1.5–3.5 mS/cm depending on stage | Every 2 days |
| Water temperature | 18–22°C | Daily |
| Ambient temperature | 22–28°C | Daily |
Frequently asked questions
- Is it more difficult than growing in soil?
- It requires more monitoring (daily pH and EC), but the results are faster and more consistent. With a little practice, it becomes routine.
- Can I do hydroponics at home in Costa Rica?
- Absolutely. The GAM climate is ideal for systems without the need for heating. Just take care of the water temperature in summer.
- How much does it cost to start a basic hydroponic system?
- A coco setup with a drip pump for 4 plants can be assembled from $150–200 in equipment. Nutrients are a monthly cost of $20–40.
- Where to buy hydroponic equipment in Costa Rica?
- At Pachamama Indoor Farming, with the most recognized brands and technical advice included.
