You are gonna need some big fans to cool them down. I'm not an expert on fans as I grow in an open room with a 250w.

You will want to make sure the room is very well ventilated. Maybe some extractor fans out the window too.
stone_sensation Reviewed by stone_sensation on . HELP WITH HEAT PLEASE!!! I'm growing in a Basement with 2x1000hps lights.Haven't placed plants in yet! Testing conditions of room.First off What type of fan(size) do I need to cool of these 2x1000hps lights? If I was to attach a fan to window and bring in Cold air from outside during lights on period help keep the temps down? :( Rating: 5