This project start with an idea of self-managed indoor farm. To monitor and manage the system through the Internet is core of this project. This project will be monitoring the value of pH level, water temperature and light of the whole entire system.
If you know how to do POST request on Particle Photon, you can use it.
DS18B20 Temperature sensor
Make sure it come with metal case and it's water proofed.
Atlas is a good brand
TSL2561 Luminosity/Light Sensor
you can make your own by using 5050 RGB/warm white LED