Few Questions for someone more knoweledgable

For flowering 400 will cover a 3x3. 600 for a 4x4. 1000 5x5. You can usually use around 25% of flower wattage for veg. For example a 250w veg room can fill a 1000w flower room.

That said in my flower room i can run a 1000W ballast to veg and in flower i can run 2 1000W bulbs for an 8x8? will an 8" inline fan be enough to cool in an air conditioned basement? or will it be to much light for the space?

Originally Posted by grobofotwanky

For flowering 400 will cover a 3x3. 600 for a 4x4. 1000 5x5. You can usually use around 25% of flower wattage for veg. For example a 250w veg room can fill a 1000w flower room.

this, lol.. also, i think 2 600s is the way to go over 1 1k lamp as you get almost the same lumen output, but are able to spread the light out better since it's coming from two sources rather than one, plus 600s are the most efficient wattage hid made, not to mention the decrease in heat..

That said, will an 8" inline work to control the heat well enough? Thats something i didn't have to worry about with CFL's at all unless the plants spurted up and actually touched the bulb. Want to make sure my experience with HID's is as pleasant as CFL's since I'm going to invest significantly more into a permanent grow room

the diamter of the fan is not as important as the cfm that fan can push imo... you could get an 8 inch fan that is only rated for say 100 cfm and get a four inch fan rater for 500, and obviously the 4 inch would be the better choice for a bigger sized grow...

These were the answers I was looking for. Thank you both of you for the help. i hope to build a fantastic grow room for the permanent growth of the good stuff all year round.

Originally Posted by grobofotwanky

For flowering 400 will cover a 3x3. 600 for a 4x4. 1000 5x5. You can usually use around 25% of flower wattage for veg. For example a 250w veg room can fill a 1000w flower room.

This is exactly right. I would maybe say 50% wattage in your veg though. Also, if you use 1000w bulbs you will actually save money becasue you won't have to buy as many bulbs, ballasts, hoods, and maybe fans. Plus, not 100% sure but I thought I saw a thread where they showed that 2 600w bulbs gave off more heat than a 1000w.