lamp types

Hello! I`m quite a new grower, really new actually. I have a 120cmx120cm tent with a 600w HPS bulb! But now, at summer its generating a lot of heat, even at night (when I turn on) Some days getting 30 degrees. My question is: There is a way to reduce this heat inside the tent? I use to open...

Anyone using the BAY6 600 Watt dimmable digital lighting system? If so, is it any good? Thinking of using it with a 600 Watt BAY6 Dual Spectrum Lamp. How do Dual lamps compare with separate veg / flowering lamps? Soz for all the Q‘s; been growing outdoors til now, so not sure about the...