Daytime sun getting tent too hot

[iman]

Hi guys

A couple of days last week my tent got to 30c/86f and I seem to be starting to get some fox tailing. I am in the UK and when the Sun hits the summer house windows it is starting to get quite warm in there if I am not around to open the doors and windows. I was wondering if I could change my light schedule from 20:4 to 19:5 or 18:6 to avoid overheating. If I did this with the plants be okay and would it affect the yield or drag the process out a lot longer? They are white widow autos from Seedstockers on day 82 so not far off.

 

[Mizzo81]

You’ll be fine cutting an hr or two out. But shading that window with a nice heavy duty curtain will block most the heat from the window.

 

[Mizzo81]

Shade works a charm

 

[Mizzo81]

Lovely bunch of buds ya got there too.

 

[automan2]

Nice crop!
Cut time as much as needed ...yeild won't suffer as much as heat will cause.