first 4 week and a half HPS 250 W and switched to LED spiderfarmer SF2000 200W few weeks back to solve issue i had with heat, this summer i could reach more than 40°C inside the tent ... and even in winter temperature could be around 36°C.

Now with the SF2000 i'm around 30° to 33°C wich is still a little too high but anyway much better than with the HPS