Madrid's smallest
hydroponic lab.

The Hydro Lab isn't a corporation. It's a 3-square-meter balcony and a spare bedroom in Madrid where we test what actually grows in an urban environment.

Our primary testing shelf with LED grow lights and DWC buckets

LAB NOTE #04: Testing Samsung LM301H diodes vs generic LEDs. (See Lighting bench)

Evidence-based gardening.

We don't do vibes. We measure pH, EC, PPFD, and VPD. If a nutrient brand says it boosts yield by 20%, we run a side-by-side control and publish the results.

Open hardware.

Hydroponics shouldn't be a black box. We prefer DIY systems built with off-the-shelf parts from the hardware store and ESP32 controllers.

Real numbers.

We track the cost per gram of every harvest, including electricity and nutrients. We want to know if growing lettuce in a flat actually makes sense.

The Community.

The Hydro Lab is built by and for urban growers. We share our mistakes so you don't have to kill your first batch of strawberries.