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View Full Version : Plans n' questions


Brixx
08-09-2005, 12:22 PM
With a month or so to go on my first time batch under florecent grow lights, I've been thinking on what to do different for my next go around. It looks like I'll be able to convert the nook beside my closet into a slightly larger than 3'x3'x6' (L/W/H) flowering area. I plan on using some mylar on the walls, floors n' maybe ceiling and finally getting a 400w HPS to boost the flowering. Probably stick to my floro tubes for vegging for the next little while... Was planning on making a 'door' to the nook using black/white poly with a fan in the corner for some circulation. But since this would be my first time using a H.I.D. I'm curious about a few things:

1) How much extra heat will a 400w HPS probably generate? Ventilation to outdoors is a slight problem due to the layout of the room and I'd hate to be sweating non-stop everytime I come home :P Not to mention I've got to run my power cords out from the nook.

2) Any reccomendations on reflector types? I've read batwing types may lose a lot out of the sides, shoebox style doesn't reflect efficiently, and I'm worried a parabolic might have too much height; forcing me to have shorter plants. Saw an interesting 3'x1.5'x0.5' (l/w/h) reflector that was a shoebox style but with angled corners on EBay that was part of of a kit.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7704769695&category=42225&sspagename=rvi:1:2v_home
Stupid lack of shipping to Canada...

3)400 watts should be enough for a 3'x3'x6' space right? I'm tempted to step up to a 600 but again, that ventilation/heat issue.

rangerdanger
08-10-2005, 04:31 AM
The rule of thumb is 50 watts HPS per sq/ft.
So 400 watts is almost perfect for a 3'x3' growspace.
Upgrade to a 430-watt full-spectrum bulb (like the Agrosun) and you're spot on.
HPS put out a lot of heat. Also, marijuana needs fresh air; the more the better. You'll need intake and exhaust of fresh air.

I use the standard "shoebox" style reflector.

meangreen
08-10-2005, 05:01 AM
Sun systems econocool aircooled hood with a sunsystems 1 430 watt ballist with a 430 son-agro bulb.I ran 430's for years in every situation one can imagine and a air colled hood will get your temps down in that non-enclosed 3' x 3' x 6' area to 75-78 assuming ambient room temps are 70-74 with the assistance of a 16" or bigger oscilatting and a outlet for the exhausting of hot air thru the aircooled hood.Like Ranger said get a exhaust going and IMO I dont think ya need a intake as its in a nook in a regular sized room unconfined and with a 16" or bigger oscilatting therewill be plenty of air in that room to move around as you will be in and outta the room on a daily bases.Good luck