Hi everyone,
first post but long time reader of these forums. I have recently contructed my very first grow box, now i have a few questions but a bit more about that later, first i will just list the things i have done.'

I started off buying 3 black plastic grow boxes that measure 1.4m x 80 cm by 60 cm high. (4 f x 2.5 f x 2f high), additionally i bought a 20cm ventilation fan that they use in vanities and walls (8 inches), then i bought myself some 10cm (4inch) pvc pipe for my passive intake, i also bough two right angle connectors to minimize light entering into the box. for light i have 1 400 watt HPS with ballast.

Construction ( PICS TO COME, i will post up asap, i have drawn one as camera is only being returned to me in a few days)
- I soldered a hole for the fan in the top box and mounted it in the side.
- Then i mounted the fan in the box
-Cut out the bottom of the middle box so it was just the shell.
-i then lined the inside of the two lower boxes with alfoil, you may call it tinfoil?
- i then cut holes for the intake in the bottom corner of the lowest box and made sure it was all airtight, the intake runs along the box then turns at a right angle along the next wall of the box
-After doing so i mounted the 400 watts HPS is the top box (it is fixes so it cannot move but i can always change this if needed)
-This is basically it took me around 5 hours
the box is currently standing at 5 feet tall.



Questions
1) The temperature in the box is at a constant 30 - 31 degrees Celsius ( 86- 87 F) is this to high,it is about 8 c higher than the outside temps. i have the fan running constantly with the HPS. If it is to high can i simply add another 'storey' to the grow box to make it four boxes high.
2) Is the ventialtion adequate?
3) Do i need an additional fan insdie the grow box to promote strengthened stems or is it enough?
4) Should i be using different lights for the veg and flowering or can i use the 400 watt hps thorugh out and switch to 12/12 when flowering.


Notes -
- Keep in mind my budget is almoast all but run out, i am not after the biggest and best yields money can buy, just a good yeild that will last.
-I know this seems alot of questions but i have read thorugh all the stickies on this site and others and i have been researching for a while i just want to get this grow under my belt as best i can.
- thanks for looking and any advise you may give me!
Unispanman
Unispanman Reviewed by Unispanman on . XTRA Large Growbox - Australian Made - Pics to Come Hi everyone, first post but long time reader of these forums. I have recently contructed my very first grow box, now i have a few questions but a bit more about that later, first i will just list the things i have done.' I started off buying 3 black plastic grow boxes that measure 1.4m x 80 cm by 60 cm high. (4 f x 2.5 f x 2f high), additionally i bought a 20cm ventilation fan that they use in vanities and walls (8 inches), then i bought myself some 10cm (4inch) pvc pipe for my passive Rating: 5