400W or 250W?

Now you have room to sleep in there with your plants to give them that extra shot of CO2 they need!

 

I have DR90 3x3x6 and I got over 8oz from 2 plants last time .Check my journal (link in my signature) and just simply follow the steps.It's not the best journal but somewhat detailed.
Goodluck .
P.S.I was using 600W light but only 2 plants, I am sure you be able to get 8oz from 4 plants under 400w...