Which light for this room?????????

Ok so the room is around 5x6 ...Hydroponic setup,4 plants are going to be in the room(well closet).This is only a flowering room. I am trying to decide between a 600w or 1000w HPS. Now im not to sure if ventilating the heat will be a big problem or not,im thinking that it wont be,but lets keep that in mind aswell.


So my question's

Will i save alot more power and energy usage with the 600 opposed to 1000?

Will i have alot easier time keeping the heat down in the room(and venting it somewhere) with a 600 opposed to 1000?

Will it be worth my money for those upgrades?

Will i lose out tremendously on the yeild between 600 over 1000?

Like i said this is for a 4 plant hydroponic setup



Also,for this setup would these be a needed upgrade or would i be just as good with the standards

Maxwing reflector(comes with) OR cooltube 6" reflector for $50 extra

Grow bring 1000w hps bulb(comes with) OR Sunmaster 1000w super HPS for $40 extra

For 4 plants you won't need a 5x6 area, the light will probably only need to cover an area of 2x2 (1sq ft per plant) so a 250 watt hps will suffice or a 400 watter if you want to go a little over the top but IMO either a 600 or 1000 would be complete overkill for 4 plants. For an extra $50 i'd definately get the cool tube, your heat will be a lot easier to manage with it.

Good luck.

It sonds like alot of space for 4 plants depending on how big you want your plants to be. Either way i would go with a switchable 600w MH/HPS lighting with a reflective hood that has a place for your exhaust. The 600 HPS produce more lumens than the 1000's do. Also if you dont have much height for your plants in your closet, then i would just put more plants in there If i didnt have much head room. Rule of thumb is measure the height of the room and then subtract 1ft-2ft for lighting between plants and lights, subtract the size of the plants you want, and finally measure and subtract the height of your hydro setup. The remaining space is for you decide what style you like most. I hope this helps:jointsmile: It will be cheaper to get the 600w and you will probably want to have an intake, it will never hurt you to have an intake or just get co2

but as far as yeild goes,where will i stand between a 400,600,and 1000w in that room with 4 plants,lets say even if i go up to 6 or 8 plants...will a 1000 still be over kill? Ofcourse im looking to get the most out of these plants

like i said,im mainly looking for the BIGGEST YEILD possible form these 4-8 plants...and trying to determine how big of a differnce my light is going to be...thanks for anyone that replys!!!!



And for reference,,setup is DWC in 5 gallon buckets

for a 5x5 space you want a 1000watt HID light.

More light = more yield (given that everything else is in order).

With that said; if you are set on a 5x6 grow area then use a 1000 watt light for maximum yield. Also, grow more than 4 plants. That is a huge waste of space and so much light that would hit the floor that should be covered with canopy instead to make as much usage of your electricity as possible.

Otherwise I would suggest a 3x3 grow space and use a 600 watt HID. That should be perfect for 4-6 plants in 5 gallon containers.

Good luck :thumbsup:

Veg them out much longer than you normally would, or take Daihashi's advice and think about filling the room with more plants to occupy the empty space. Much better returns for the space and amount of light you want to use. I also agree that a 5x5 room would do well with a 1k HID. I'd go with a cooltube for both the 1k and the 600w, no mater which you decide to use. Ventilation is very important when working with HIDs, so try to spend equally as much money on it as you would on your light.

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Originally Posted by inutero11

like i said,im mainly looking for the BIGGEST YEILD possible form these 4-8 plants...and trying to determine how big of a differnce my light is going to be...thanks for anyone that replys!!!!



And for reference,,setup is DWC in 5 gallon buckets

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If you're looking at 8 plants max (which will use around a 3x3 area) a 400 or 600 watt hps will be about right. A 400 will give you 44 watts per sq ft (a little on the low side) and a 600 will give you 66 watts per sq ft. (just right imo) A 1000 watt would give you 111 watts per sq ft (for me this is a waste, i'm sure i've read somewhere that anything over 80 watts per sq foot give very small increases in yield and is basically a waste of electricity) Not to mention the increased heat that you will have to deal with.

For me it's an easy choice, get a 600 watter and should you want to grow more plants in the future you can add another 600w and double your area from 3x3 for 9 plants to 6x3 for 18. 600w lights scale up better than 1000watters from what i've read.

I would use a 600w and leave enough room to get around the plants, any lower wattage would be under utilising the the area.

:cool:

Another vote for 600w for that space. A HPS 600 with a good quality bulb is nearly as much light as a HPS1000! It's the best bang for your electric bill buck.

So im not going to have a significant difference in my yeild between the 600 and 1000? Sorry if im not grasping what everyone is saying but doesn't more light = faster bigger grow?

Well there are more factors to yield than just light. My instinct says that it will be so difficult to exhaust the heat from a HPS1000 from that space that you will actually end up shooting yourself in the foot yield-wise. In a larger space, a HPS1000 gives more yield. But the footprint to run one should be a space 5x5 feet and at least 8 feet high. You could FIT one, if you can exhaust it- but that's something you need to find out.
Have you ever grown before? The way you phrase your questions about lots and lots of yield hints that this is your first time out. In that case, you will DEFINITELY want to make absolutely sure you do not have heat problems, as they are a guaranteed path to disappointment!
Edit: How long do you plan to veg the plants before flipping them over to 12/12?

How about a 400 cfm inline? Is that sufficient or are you talking about A/C for cooling?

first time out,C. Vegged for 2-3 months,i know longer then i need but light situation is the hold up. I am concerned about heat and energy,although getting the most for my money and best yeild possible is my main concern,and im trying to to do the best research for my conditions as i can.You see,i can spend $100 more and get a 1000w opposed to 600w,and this is where my problem lies.From the way it looks everyone is definitely in favor of the 600w instead of the 1000w.

Let's throw everything out the window thats been said and speak in theoretical terms. You have 2 5x6x8 room's. Exact same setup in each to the T! Same amount of plants and genetics,they grow exactly the same, same setup,same humidity and temp in the room,etc etc etc(im aware this is not realistic as nothing in nature is identical,but theoretically speaking..... One room has a 600w,the other has a 1000w.They grow for the same amount of time. Which room is going to produce a better yeild and why? Rember the only thing different in the equation is the light,everything identical

In that case, the light makes the difference.
If you decide to go for the HPS1000, I STRONGLY recommend a good exhaust fan connected to an air-cooled hood. Aim for a 200+ cfm fan!
It's good that you vegged extra time if you are only growing 4 plants under a big light in that space. I'd personally grow 36 small plants SOG on a 4x4 runoff tray in that space. You can set it up in many configurations, depending on what STYLE of hydro you prefer. But longer veg=fewer, larger plants to fill the same space. Try to train them as flat as possible as you are flowering them, and then let the buds grow up straight with no more training after the 'stretch' period is over (2-3 weeks in).

Yeh ,that's the case here pretty much. I deff have 200+cfm in mind,im going to get a 400cfm that i decided on.

But yeah its DWC style 5 gallon buckets,everything is going pretty smooth and looking good so far actually(the vegged plants are about foot half to 2 feet tall full of stems and leaves(stacked),my only concerns are getting the correct light for my setup.

You say the light makes a big difference, so am i right for wanting to go with the 1000w to get massive buds or will the 600w still be a extremely close competitor that id be better off with?

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Originally Posted by inutero11

Yeh ,that's the case here pretty much. I deff have 200+cfm in mind,im going to get a 400cfm that i decided on.

But yeah its DWC style 5 gallon buckets,everything is going pretty smooth and looking good so far actually(the vegged plants are about foot half to 2 feet tall full of stems and leaves(stacked),my only concerns are getting the correct light for my setup.

You say the light makes a big difference, so am i right for wanting to go with the 1000w to get massive buds or will the 600w still be a extremely close competitor that id be better off with?

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honestly I would run two 600 watt hps's vs 1 1000watt one. More lumens per watt and still easier to cool on an individual basis if going through a cool tube.

thanks for everyones help BTW