Second attempt to release a Water Tower system. this time I've added some MOSFETs to drive:

• 4 12VDC PWM output (I personally used them for water pump, peltier pump, peltier fan, environmental fan)
• 4 12VDC Relay output (Lights 1, Lights2, Peltier cell Hot and Cold mode)
• 2 temperature sensors (using DB18B20)
• 1 temperature/humidity/pressure sensor (using BME280)
• 1 capacitive water level sensor

It has an onboard logic to keep the reservoir at desired temperature prior to water it (thus keeping the system on an acceptable temperature range through all the year)

The board is powered with 220V - 12V 10A power adaptor so it can manage quite a lot of power consumption.

see project website