I have now switched to a 12/12 cycle and set the ballast 400watts.

The girls also got thier first taste of bloom food today with a mild dose of Pure Blend Bloom.
I have also installed the second fan in my fanbox.These two "vent booster" fans are taking care of the heat from the 400HID with no issues.They are whisper quiet too.
The temps in the cabinet are staying in the low 70's now.I will be looking around for a humidity gauge though,as this may become an issue as time goes on.

Here are some plant pics and the completed fan box.
Darkone7 Reviewed by Darkone7 on . long time coming. . new cab grow it has been a couple of months since my last run here. Problems aquiring equip and building a new permanent cabinet slowed me up conciderably. Last run I did a T-5 grow.Turned out not bad concidering I used blue spec bulbs start to finish. This time around I am going to go HID with a couple of different digital ballasts. First I am running a Quantum 400 digi.(was asked to test this for a friend).Starting at 300w I will dial it up to 400w after a couple weeks.I am then going to switch up to Rating: 5