4.5square ft grow space 1000wat or 2 600?

Hi I recently got a 4.5 (20sq ft) From what I have researched you want at least 50wat per square ft bare minimum. 1000wats ends up being about 50 per sq ft. At my local store there is a 1000wat magnetic coil ballast for only 140$ I asked the shop owner to hold on to it for me until Saturday; before my trip to the shop I planed on using two 600wat air cooled but now its the 1000wat air cooled would be the cheaper option. So my question is with a good air cooled reflector will the 1000wat get the job done? any opinions on this would be appreciated.

also to anyone who helped me with my last grow it went amazing I grew last year cannabis cup winner tangerine dream and i have to say if you like statvia dominant you would love it for that grow I had 66 wats per sq ft for that grow in case anyone was wondering


Thank you hip fourms as allays and much <3 *Randy*

 

1000K is a fine lamp. but if you can break the lamp up having 2 -600W would be better... Remember one light mean only one place to have it..

2 lamps will cover more area, and 2 lamps could be used for other things. when one lamp is in light use for something. The other lamp is used for something else..

 

Agree two is better then one and will give a more even light spread. If you can afford it get two 600 watt electronic dimmable ballast . 50 watts per square foot really does grow lovely plants anything less and you could be growing leggy plants.

 

I was afraid that would be the general consensus one 1k would be lot cheaper. But of course I want the best plants possible. This will be my first grow using air cooled reflectors. One more question if you don't mind. The guy at my closest hydro store told me that i would need two 160 dollar 450cfm 6in inline to vent the reflectors when an online website htgsupply.com said that two 25$ 250 cfm duct fans would work this: http://www.htgsupply.com/Product-6in-Inline-Duct-Fan.asp one 250cfm per light would cool them fine. Cant thank you guys enough. Randy

 

Well plants take time to grow you wont need two lights at first the name of the game is not to waste light get one start growing and save for the next.
Well I would think that would cool em but you pay for you get lot of ppl like ruck fans.

 

I will have a fan exhausting and blowing into the grow space at around 150 cfm from two 4in normal round inline one with a good sized carbon filter. When you mean get the job done what exactly does that mean for an air cooled 600 bulb lets no heat in he growspace? or some where in the middle were the 250 air cool per light plus 150 input and 150 output keep it around a good temperature?

 

I would exhaust only from your space an extraction rate of total volume once every five minutes is considered the going rate so that plus any form of air cooled light hood will be ok, with a carbon filter you need a high torque fan, active air intakes are mainly for large grow rooms and if you dont maintain negative air pressure inside the space then air could leak out defeating the carbon filter.

 

I divided the total area of the room 55x55x79 by 5 and got 140cfm to cover the odor you want the air exchanged every 5minutes correct? or are you saying I only need an exhaust no fresh air being blown in? I have a speed controller soo i could make the intake less then the exhaust connected to the carbon filter


Also the hydro store guy said hes never heard of someone using those ac inlineduct fans to cool reflectors I just wish some one had first hand experience that he is incorrect otherwise things get alot more expensive

 

Yes every five minutes the total volume of air should be exchange. You would seal your grow space so its air tight and have passive air in takes (holes or ducting) at bottom of your space and extract from the top so out side air gets dragged in from the bottom.

 

So I do not need two circle Inline fans I only need the 4in exhaust one you said you want to seal the grow tent which it would be if i have my exhaust with the carbon at the top 4in and then that means i should leave the bottom 4in space open for air to enter the tent and odor would still be taken care of even though its not really sealed since the bottom 4in duct open is opened?

 

That is correct, think your getting the general idea now. Sorry if this sounds a bit basic but worth making it clear you would exhaust at one end (at top) and intake at the other end (bottom) so they are as far away from each other as possible and as for intakes for every inch of exhaust you need something like 3-5 inches of intake so for a 4 inch fan you would have 3-5 holes of 4'' as the intakes.

 

Ended up with two air cooled 600s. 66 Wat per sq ft should be pretty good along with the good light coverage

 

Sweet as dude.

Even with air cooled reflectors if your gonna be starting from seeds dont go putting your spouts anythings closer then 3-4 foot away from such powerful lights for first two weeks they really dont need it or can use it. Good luck with your grow.

 

I can't thank you enough for your insight into this if you have 4 in holes for air intake what about for the plants dark period? I could reattach the 4in holes but then i couldn't really run the fan

 

a few holes in bottom wont make any differents to the blooming but for light and stealth issues light unless reflected only travels in straight lines so for the intakes attach painted matt black on inside elbow or bend as the ducting and have em downwards facing or join to together to form a trap. Any form of light trap should.nt be hard to construct be it plastic or a wood.

 

Ok so if I attach both a 4in 8ft piece of ducting and a 8ft 6 inch run the ducting into a dark closest and bend into the corner; would an 4in hole and an 6 in be sufficient as air intake with roughly 550 cfm being ran through the reflectors then exhausted into attic? <3 the help can not thank you enough. This is my second grow not to mention first time with grow tent this large as well as first time using negative pressure tent which as you said is much more efficient.

 

Sounds good to me. I would think you have a door or flap you again access to the space from if you run it open so there's no negative pressure check the exhaust and then run it closed the exhaust should feel like its being every so slightly restricted but not choked up or putting undue pressure on your fan. That will ensure the air flow is in the direction you want in the grow space and that no smell can leak out.

 

Well I got everything I plan on mounting the 50ish pound filter 6 in fan and reflecters and lets see if the grow tent lives up to being the strogest in the industry they claim I know my first grow tent would break under that weight. I'm pretty confident in this 20 sqft all steel one but you know i dont get home to start puting together the suspense of everything working as seemlessly as i intend is kind of stressfull but exciting at the same time meanwhile i look on internet for my next 20 plant photoperid grow 1 plant per sqft and I intend to use all the space, this first grow will be world of seeds auto flower afgankush was fairly cheap as far as what will hope to be good indica dom auto flower.