the temps here have dropped a bit partly due to the heatwave finishing, and partly due to my adding a good fan kit.

its my first reasonably serious grow, so im no expert, but i think the key to surviving hot temps is to keep that air moving even if its just re-circulating rather than venting. my set up is very unsophisticated compared to some, just miracle grow compost, and 400w grolux lamp and powerplant reflector, 5inch inline fan ( 250m3 per hour )