Karma - Lightproofing your box can be as simple as covering it when the lights are out - or as complicated as sealing every single crack.

Are you turning your lights on and off manually or do you have a timer? If you are turning them on and off manually then it will be easy to cover and uncover the box when you turn the lights off/on.

You seem to be pretty good at dumpster diving - I can't believe you found that fan - so go find some black visquine (plastic). Trying to lightproof any other way is going to cost money that you don't have and you need to spend your limited funds on other things. Like some decent nutrients - for you and the plants.

Take your fan and make it so that it is exhausting air - blowing the hot air out of the cab. The fan should be mounted close to the top of the cabinet because hot air rises.

Get an oscilating fan and put it in the cab to move air around.

So, anyway, scrounge some black plastic and scrounge another fan (the blade kind that blows air while it turns from one side to the other).

Are you using any nutrients at all with your plants right now?

PC :thumbsup: