Is this a good grow box?

A question from a fellow grower;

This is my grow box 3 cfl lights 28 watts
1 exctuat fan for outtake air and one hole covered with a sheet for intake air and the entire box is cover with aluminium foil for light to reflect
Is the grow box equipped till a good harvest or do I need anything more? please help.

There are a few members here that are doing good with the grow box .

I prefer my intake on opposite side as exhaust simply because it draws fresh air through the plants and not straight out but would do the trick

The aluminium foil needs to be turned around to the
dull side if I remember reading here some where. You will need to lower the lights or move plant closer.