Archive:Hydroponics

 

Hydroponics Gardens Release status: experimental [box doku]
Description	Growing plants in water, indoors
Author(s)	tiefpunkt

We have a small hydroponic garden in our space, currently consisting of one deep water culture box with 4 plants.

Plants

There are currently 4 plants:

• Bell pepper
• Mini cucumber
• Zucchini
• Jalapeño chilli

All 4 were not grown from seeds, but bought when they were ~10-15cm tall, and replanted from soil to hydroton.

Hydroponic system

The plants are set in a deep water culture, build from a 22l IKEA Samla box. We are using the black version to discourage algae growth. The box is completely filled with water (and some nutrition solution). For air supply, it has a 30cm air stone on the bottom, which is supplied by a 165 l/h air pump. We are using 8cm net cups for the plants.

Lights

The plants are under a 40W CFL daylight lamp, which is on a timer to be lit for 12 hours a day.

Sensors

There are currently 3 sensors in and around the system, monitoring 4 values:

• Outside temperature (Sensor: DHT22)
• Water temperature (Sensor: DS18B20)
• Humidity (Sensor: DHT22)
• Water level (Sensor: HC-SR04)

Values from these sensors are posted to MQTT (MuMaBus), and then pushed to our ThingStore [1].

In addition, there is a webcam in front of the plants: http://data.tiefpunkt.com/hydroponics/image.jpg

Costs

Item	Price	Amount	Bought where?	Notes
Ausströmer 30cm	3.61 €	1	Amazon Marketplace	(+ 3.18€ shipping)
Tageslichtlampe 40W (200W)	17.75 €	2	tageslichtlampen24.de	only need one (+3.57€ shipping)
Membranpumpe (Luft) + Schlauch	12,98 €	1	Amazon

See also

• Aquaponics