Is this light good for this grow room?

This is a two part question.

1. I have a large and oddly shaped closet for my growroom. It's 9 feet tall and six feet wide at the widest point (the room is sort of boot shaped) by three feet. I'm thinking of getting a 400 watt HPS that I've seen advertised for around $120. Now I won't have money to get an air conditioner or anything else I think to cool the room but I can have the doors open if I like. So would that lamp cause way too much heat in that scenario or should it be ok?

I have 11 seedlings right now and I'm hoping to fit as many as I can in there.

Also:

2. This is the link to the light I'm thinking of getting.

http://www.htgsupply.com/viewproduct.asp?productID=47929

It seems to be way cheaper than most 400 watt lights I've seen on the ebay and elsewhere. Does anyone know if it's a good buy? I'm skeptical as to why it's so cheap!

I hate seeing posts like this.

If you are using HPS then you should look at ventilation otherwise you will have to control temps during your growing which is never a good thing to do as it is dusty.

Better to be prepared and look into ventilating early before you begin. Leaving the door open will work to release some hot air but there is alot more too it than just releasing hot air. There is also air exchanges to take into account.

Are you gonna be around to open and close the door during lights on and lights off? What are you gonna do about old air not going anywhere during the dark cycle?

BEST TO VENTILATE YOU WILL THANK YOURSELF THAT YOU DID IN THE LONG RUN.

If you arent going to ventilate then good luck with your EASY BAKE OVEN

J

Its 400 w ... HPS ... Its cheap ( not allways a god thing ..not allways bad ether ) ... I read the other day that its recomended about 100 w - 125 w per plant it optimum .... So do the math

Others will of course disagree ... but it is what it is ... Looks like a good deal

" A 2 year warranty for the High Pressure Sodium ballast and components and a 1 year warranty for the High Pressure Sodium lamp. "

jondamon said:

If you arent going to ventilate then good luck with your EASY BAKE OVEN

J

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LOL J's on the rag again .... BUT DEAD RIGHT ! ... venting and air flow is Vital ... Better to get it now coz you WILL need it later on . I think the best advice is ...Get all your kit first .... then start your grow , You will be glad you did when that room starts to cook your babys

Vento said:

LOL J's on the rag again .... BUT DEAD RIGHT ! ... venting and air flow is Vital ... Better to get it now coz you WILL need it later on . I think the best advice is ...Get all your kit first .... then start your grow , You will be glad you did when that room starts to cook your babys

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I am when people dont research ..
YOu know me by now VENTO i make comments and suggestions its up to people to either listen or not.

The easy bake oven is just a little laugh as they could probably cook some nice BEEF in there if they dont ventilate lol

People go on and on about how they have done research etc and they obviously dont do enough research because they dont know about setting up a grow room.

You can research and research about growing but unless you provide at least a half decent environment your going to fail.

J

Read the grow room tutorial in my signature below

desertrat said:

Read the grow room tutorial in my signature below

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I think it might be falling on deaf ears Desertrat

Lol

J

Come on man, cut me some slack. His post won't fall on deaf ears. Everybody was a noob at some point. Thanks for your input, it's very helpful.

If its not falling on deaf ears then make sure you ventilate.

I know i can be a bit harsh at times (someone else called it tough love)

you must ventilate otherwise you will be trying to make the ventilation while you are growing which is never easy. Do it now and reap the rewards later.

You have 2 guys answering you about ventilation that have some experience so please take our advice and look into ventilating your area. You wont regret it.

Sorry about being harsh but sometimes its what is needed to make people understand.

J

"Are you gonna be around to open and close the door during lights on and lights off? What are you gonna do about old air not going anywhere during the dark cycle?"

Yes I will be around. As for the old air in the dark cycle could I just open the doors and blow some fans in there hopefully getting the air flowing.

Also when I get to flowering I will be using the HPS less because I keep the plants in the sun for a good portion of the day.

I'm not sure yet what the most cost effective way of ventilating would be for me and if it's ultimately doable which means if I can't do that I guess I won't get the HPS for now and settle for perhaps a cfl grow.

Even with a CFL grow you need air exchanges to refresh the air. as you know plants use Co2 and give out oxygen during their light cycle. If you dont ventilate you are gonna make it difficult for the plant to breath.

yes you could open the door and blow fans into it but then you dont want any light leaks during the dark cycle so how will you accomplish this?

If you choose CFL then you could cut some PC fans into your door of your grow room which will help to circulate the air.

J

Yes I will be around. As for the old air in the dark cycle could I just open the doors and blow some fans in there hopefully getting the air flowing.

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Dark cycle means dark - totally black, not just the sort of dim cycle.

If you can somehow leave the doors open but let no light in at the same time as providing enough cool air then you will be ok...

I have one of those lights and they work nice!!

So the pc fan thing wouldn't be an option if I went the HPS route?

As I said I don't have much money to throw into the ventilation.

What offhand is the cheapest way to solve this problem?

I have another very large closet that I could move the plants into for the dark cycle. The only thing is taking the clothes and other stuff in there out is not an option. There would be enough room with that stuff still there though so would that be an option? That room is practically 10x10x10.... So just to recap that would be light cycle in grow room with doors open and fans blowing in and then dark cycle in the other space...

lol damn give this dude a break!

He IS researching, that's why he goes to this forum and asks questions like he should.

He specifically asked if he needs ventilation, which shows he's paying some interest into that, not overlooking it.

Nobody knows how to grow right off the bat, lol it's called learning

jondamon said:

I am when people dont research ..
YOu know me by now VENTO i make comments and suggestions its up to people to either listen or not.

The easy bake oven is just a little laugh as they could probably cook some nice BEEF in there if they dont ventilate lol


J

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lol

I love you J <3

It is some what amusing to me to continuously see these posts and responses. OP you are correct we are/were all noobs at some point in time.

What irritates J, myself and others is life noobs trying to grow. They have not been taught the problem solving skills to even be able to do the research, to ask an intelligent question. Many can not even put together 2 sentences. I takes a certain amount of common sense and intuition to be able to understand the very basic concepts of a successful grow.

If you want to grow swag go ahead, but my goal is to grow the best.

We strive for improvement not perfection.

If your solution to heat is to open a door... enjoy your swag

*edit Oh and don't listen to J he will have you blowing air in.

Suck don't blow.

Bonzi Lighthouse said:

*edit Oh and don't listen to J he will have you blowing air in.

Suck don't blow.

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to be fair Bonzi he asked about a cheaper alternative to an inline fan so i told him about the PC fan route which if using a CFL will help to circulate the air if he has a smaller intake PC fan and a larger exhaust PC fan.

The passive intakes will only work if you have an inline fan sucking the pressure from the room and he specifically said that he doesnt have the money for this.

So to the OP i would say stick to the CFL route if you do not have the money as i can safely say from experience that PC fans just dont cut it for ventilating an HPS grow room.

Actually Bonzi FYI there is alot of debate about whether it is best to suck or blow. The people that suck say suck the people that blow say blow, The reason that i think sucking might be a bit of an issue is with the amount of heat passing through the inline fan which could reduce the life expectancy of the fan. BUt i am prepared to try both once my latest grow is finished which i have said in my thread if you remember so dont get ARSEY with me boy lol

Dont get me wrong my setup is not ideal yet but it will be when i revamp where i will be able to test completely the differences in temps by both sucking and blowing.

J

Geez, there's a lot of judgement going on here and that's what's pretty irritating and unnecessary to me. This is should be a friendly board, not a middle school cafeteria where the new kids are subjected to spit-balls and wedgies for crying out loud. I'm trying to make things work with the means I have and what's available to me. Of course I don't want to grow shwag and that's why I'm here asking questions.

Maybe the door opening won't work, that's what I'm here trying to figure out. Cutting holes in the walls though is not an option. The doors them selves are large, (approximately the size of two normal doors) and they encompass the majority of the width of the grow room. With fans inside and a fan outside blowing shouldn't this cool things down significantly? On top of this I'll be taking the plants on to our porch a good deal of the time for sunlight unless they get ridiculously stinky which will also cut how much the HPS will be in use and how much time they'll have in the room.

I have another room that I can use for the dark cycle that is very large, about 14x11x9, has a ceiling fan and is connected to central air. Unfortunately I can't run the AC all night though because it makes my roommates room into an ice box but I can run it close to bed time and when I wake up.

I know it's work to do all this but I work at home and have time for it all.

Do you think this plan could work? If not can you tell me why without telling me to suck it this time please?