[Help] Watering and decreasing temperature

Also increasing air circulation in the room where your tent is might be even more effective than adding it inside the tent. Make sure the air entering is a bit cooler before working on the air inside the tent. Also you can use a cooltube for your lamp and exhaust the hot air from the lamp out of the tent.

Hi, You can lower the temperature if you have a stronger exhaust and a bit more airflow. But don't too behond what's recommended for your tent size. Leaving a tutorial for this: https://www.acinfinity.com/blog/how-to-calculate-required-cfm-for-a-grow-tent/ My country and city has an amazing water system and tap water is alright as long as the pipes are clean of course. I use cool tap water now in the hot days but in winter I use lukewarm tap water. Thing about ppm/ec and water source is that you'll adequate your nutes to the base EC your water has. For example if it is distilled water you'll need more micro nutrients that you already find in tap water. Just measure the ec of your water source and add nutrients just enough for your target ec for each stage. Tutorial below: https://www.cocoforcannabis.com/ectargets/

And do you have any idea how to decrease the temperature in my box? I have a lamp, carbon filter and small fan, and the temperature is between 32-33°C at day, in the night is like 27°C. Another fan will do or I must worry of another unexpected expenses? :D