Arduino controlled hydrophonic system: Difference between revisions
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** NFT (nutrient film technique) | ** NFT (nutrient film technique) | ||
* Ebb and flow (flood and drain) | * Ebb and flow (flood and drain) | ||
** Typical flood rates: | |||
** Small systems: 2–6 L/min | |||
** Medium systems: 6–15 L/min | |||
** Larger systems: 15–30+ L/min | |||
** flood for ~2–5 min then let drain | |||
Substrates | Substrates | ||
| Line 40: | Line 45: | ||
=== Continuous flow or pump timer === | === Continuous flow or pump timer === | ||
Timer (ebb and flow?) | |||
* promotes oxygenation | |||
* prevents root saturation | |||
* Simulates natural wet-dry cycles | |||
Continuous flow | |||
* Constant supply of nutrients | |||
* May reduce oxygen availability to roots | |||
* Increases energy consumption. | |||
For an absorbent growing medium with low needs plants 3-5 cycles a day. | |||
=== 1. === | === 1. === | ||
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Structure | Structure | ||
* PVC pipes (100 mm, 40mm), connectors, pump (12V | * PVC pipes (100 mm, 40mm), connectors, pump (12V, 23W) | ||
* Tank in which the water of the system falls | * Tank in which the water of the system falls | ||
| Line 60: | Line 76: | ||
Actuators | Actuators | ||
* Water pump | * Water pump (fountain pump, hydrophonic sump pump, aquarium pump). ~15 L/min = 900 L/h. | ||
* Growing light | * Growing light | ||
* Nutrient feeder from a fish feeder. (N, K, P) | * Nutrient feeder from a fish feeder. (N, K, P) | ||
=== | === pH measurements === | ||
If probe stays in reservoir: | |||
*Weekly: | |||
*# Clean with mild acid cleaning solution | |||
*# Recalibrate | |||
* Monthly: | |||
*# Inspect for coating or cloudiness | |||
* Every 6–12 months: | |||
*# Expect replacement (hobby grade) | |||
=== 1. === | === 1. === | ||
Latest revision as of 21:54, 4 March 2026
Introduction
Grow strawberries, strawberry. Strawberry plants are hermaphroditic.
IoT Home growing system
Two irrigation categories
- Sub-irrigation systems: nutrient solution is supplied from below and roots absorb moisture upward
- Top-irrigation systems: nutrient solution is applied from above through drip emitters or sprayers
- Static solution
- Continuous-flow solution
- NFT (nutrient film technique)
- Ebb and flow (flood and drain)
- Typical flood rates:
- Small systems: 2–6 L/min
- Medium systems: 6–15 L/min
- Larger systems: 15–30+ L/min
- flood for ~2–5 min then let drain
Substrates
- Rock wool
- Expanded clay aggregate
- Coconut coir
- Growstones
- Perlite / Vermiculite
- Wood fiber
Aerophonics
Aquaphonics
- combines aquaculture with hydrophonics
Theory
Continuous flow or pump timer
Timer (ebb and flow?)
- promotes oxygenation
- prevents root saturation
- Simulates natural wet-dry cycles
Continuous flow
- Constant supply of nutrients
- May reduce oxygen availability to roots
- Increases energy consumption.
For an absorbent growing medium with low needs plants 3-5 cycles a day.
1.
The following is a short version of https://www.instructables.com/Arduino-Controlled-Smart-Hydroponic-Modular-System/ by Innovart Studio.
ESP32 instead of arduino: Easier to upload data into a web server.
Structure
- PVC pipes (100 mm, 40mm), connectors, pump (12V, 23W)
- Tank in which the water of the system falls
Parameters:
- Air temperature and humidity
- Amount of light
- Water temperature
- pH
- Conductivity [water / tds (total dissolved solids) probe] (see Arduino Automated watering system)
- Time
Actuators
- Water pump (fountain pump, hydrophonic sump pump, aquarium pump). ~15 L/min = 900 L/h.
- Growing light
- Nutrient feeder from a fish feeder. (N, K, P)
pH measurements
If probe stays in reservoir:
- Weekly:
- Clean with mild acid cleaning solution
- Recalibrate
- Monthly:
- Inspect for coating or cloudiness
- Every 6–12 months:
- Expect replacement (hobby grade)
1.
2.
References
https://www.instructables.com/Arduino-Controlled-Smart-Hydroponic-Modular-System/
https://www.mdpi.com/2673-4532/4/2/17
- Electrical conductivity. Passive components. Stainless-steel electrodes
