What happens when temperature is higher during dark cycle (night)?

[trueSight]

Thanks to AFN and other sources we know that ideal temperature for cannabis is somewhere between 22-28 degrees celsius, and there should not be a huge temperature difference between day and night, caused by lights not emitting heat during dark cycle.

I just wondered what would happen if temperature is higher during dark cycles of a grow.

I'm currently trying to make a DIY bucket for a micro grow and while lights are open, helping the girls with some ice inside the bucket as it sometimes get up to 40 degrees celsius. This causes bucket to be cooler during daytime (up to 10 celsius degrees cooler). It also adds some more humidity which is needed by my lovely 5 day old girls

I just wondered if anyone had been in the same situation, and wanted to have some brainstorm here before I handle my ventilation/heat issues and open a journal for my first grow :smoking:

 

[Waira]

well, I'm not a hydro guy, but your res' temp is best in the upper 60's, low 70's,... 40C, you're talking about the ambient air temp, right? How is it you're getting higher temps with lights off than on? Something isn't phrased right here I think,...

 

[trueSight]

Yeah I'm talking about ambient air. I'm putting ice cubes to grow box when lights are on in order to provide cold and humidity otherwise i get desert-level temperatures