Always pull through a filter...never push. Thats how they design them. Keep your fan inside the tent. (as far as noise, there is hardly a difference from inside or right beside the tent) In my kick ass picture its the thing in top area on the far right, attached to the sleeve thing built into the tent.
Don't quote me, but I'm pretty sure with a dimable ballast you keep using the same 600w bulb. You just reduce its output.
As far as the veg area getting fresh air. It doesn't need it. As long as your expelling the flowering air through the veg chamber n' not letting it sit in there heating things up you'll be just fine.
Have you sent away for this gear yet or still in the planning phase?
Don't quote me, but I'm pretty sure with a dimable ballast you keep using the same 600w bulb. You just reduce its output.
As far as the veg area getting fresh air. It doesn't need it. As long as your expelling the flowering air through the veg chamber n' not letting it sit in there heating things up you'll be just fine.
Have you sent away for this gear yet or still in the planning phase?