that is a large space for a 400 watt, just keep them in the back 2' x 4' area (or 3' x 3'). You can easily grow 12 autos under the 400 watt. I would go for a longer period of light, 18/6 at least.
Shovelhandle Reviewed by Shovelhandle on . Any advice for my first grow? I'm currently planning for my first grow in the next week or so. I ordered an 400 watt dimmable grow tent set. My tent is 60x60x78. Is this tent too big for a 400 watt light? I am planning to grow six auto plants. I got a northern light variety. Is 6 plants too much for my 400 watt light? Could I do more than six? I have read that these plants tend to be smaller and do not require very strong light to thrive. I am gonna do a 16 an 8 light cycle. Any feedback would be appreciated. Rating: 5