first real grow!!!

Let's Go!!!!!!!!!!! my first pro grow, Third Time a Charm. so, last time I put the plant in a regular closet in my friend's garden with no nutrition and only 240w led, but the cops came with a search warrant for him about something else and took it. so let's hope for no cops this time lol plus I have a little heat problem since my light is strong for my small tent so if anybody has any advice that will allow me to cool the tent an extra 2°C it would be great (now I'm at 26/7°C) with 50% light but I like to turn it up a bit and still be at 26°C at the flowering stage. so I tried putting the inline fan closer to the air conditioner and with an air pipe to transfer the air down but it didn't help too much.