12°F higher temps under the lights than the lung room. Lights are just old, maybe an upgrade to an 8" extractor would help too. I've already added a 4" intake fan. Got temps under control now with half the lights off... but I'm running 300w in a 4x4 now... Feels like I'm back in the HPS days lolDamn @Atulip ... what is that...just your light....?....