150w HPS Club and Resource Guide......
- Thread starter Pipedream
- Start date
tennesseetoker
Member
Nice loqurin, looking good and do you think that since I only have two plants under 150 that there would be any reason for me to get close to the same yeild (given we made the same mistakes.) I was under the impression that you could put alot (9-10)plants under a 150 but the light only strong enough to make them grow a certain amount. Whereas two plants under the same conditions and light would produce the same amount and instead of it spread out over 9 plants it would be only on two. I'm in no way trying to take away from what you've been doing i was j/w if i had that right?
(OGKA x SourDIBL) x Deep Chunk
yea your right because what will end up happening no matter the number of plants you have in your grow area it will naturally try and take up as much light as possible the only difference really is the chances of getting a female are higher with more plants
even one plant should give you the same yield, on my last grow i just finished i had 2 females but one of them became totally dominate and took up like 80 % of my room but it didnt hurt the harvest at all, i ended up with 4 oz dry so i was pretty happy for a first run
A 150 HPS can easily do 9 plants. I began my fifth grow with 15 plants from seed, and ended up with 9 females.
If I'm going for yield, I'm going to do a couple of plants vegged for a while in large containers, if I'm going for variety, I'm going to do many plants in smaller containers with a short veg time.
If I'm going for yield, I'm going to do a couple of plants vegged for a while in large containers, if I'm going for variety, I'm going to do many plants in smaller containers with a short veg time.
tennesseetoker
Member
Thanks yall, thats what i thought i just wasn't sure as to why, but i guess like you said if your going for variety then it's fine or worried about males. I got feminized ww seeds so i only did 2. They just finished their 1st week in flowering and seem to show female hairs coming out (as far as i can tell.) So I guess i got a little lucky.
150w HPS 4'x2½'x2' Cab Plans
150w HPS 4'x2½'x2' Cab Plans
150 Watt Club! I'm lookin to become a member. I've got the plans here on the cabinet I'm planning on building. I've posted it cause i'd like all the brilliant people here to tell me how it could be better. Once I actually build it I only plan on growing one plant at first. I know it's possible to do more but i'd like to focus my attention on one at first. I'm only growing for my lovely lady and myself and one at a time should do us for now.
The dimensions of the frame aren't exactly what I said in the title its about an inch higher and deeper the reason for the odd measurements is that I can use exactly four 8' 2x3's. I'll be taking advantage of LST and a smaller 2 gallon pot to keep the height under control. Here are a few details of what exactly I plan on doing.
1. A piece of wood to mount my fan switches, thermometer display, etc...
2. 150 watt Digital ballast.
3. Ventilation using a 12v 120mm 68.9cfm computer fan that blows into a part of a funnel and into a pringles can with drilled exhaust holes and filled with a carbon filter. A genius on another forum invented this and it worked great for him on a slightly smaller scale but I'm willing to try.
4. 150 watt mh/hps w/ reflector on yo yo's.
5. Painted matte white inside.
6. The same fan as above blowing into the box (i'll work out a light trap).
7. White waterproof vinyl fabric on the floor and up the walls a bit.
If anyone has good link on how to make a remote ballast that would be really nice and I don't know if because the ballast is digital it would make any difference in making it remote.
Thanks so much for any input and thanks for everyone who has ever posted threads here or elsewhere. If it wasn't for these forums I never would have made it this far.
Nesnarb
150w HPS 4'x2½'x2' Cab Plans
150 Watt Club! I'm lookin to become a member. I've got the plans here on the cabinet I'm planning on building. I've posted it cause i'd like all the brilliant people here to tell me how it could be better. Once I actually build it I only plan on growing one plant at first. I know it's possible to do more but i'd like to focus my attention on one at first. I'm only growing for my lovely lady and myself and one at a time should do us for now.
The dimensions of the frame aren't exactly what I said in the title its about an inch higher and deeper the reason for the odd measurements is that I can use exactly four 8' 2x3's. I'll be taking advantage of LST and a smaller 2 gallon pot to keep the height under control. Here are a few details of what exactly I plan on doing.
1. A piece of wood to mount my fan switches, thermometer display, etc...
2. 150 watt Digital ballast.
3. Ventilation using a 12v 120mm 68.9cfm computer fan that blows into a part of a funnel and into a pringles can with drilled exhaust holes and filled with a carbon filter. A genius on another forum invented this and it worked great for him on a slightly smaller scale but I'm willing to try.
4. 150 watt mh/hps w/ reflector on yo yo's.
5. Painted matte white inside.
6. The same fan as above blowing into the box (i'll work out a light trap).
7. White waterproof vinyl fabric on the floor and up the walls a bit.
If anyone has good link on how to make a remote ballast that would be really nice and I don't know if because the ballast is digital it would make any difference in making it remote.
Thanks so much for any input and thanks for everyone who has ever posted threads here or elsewhere. If it wasn't for these forums I never would have made it this far.
Nesnarb
Looks good Nesnarb. You'll have ~5 square feet to work with. 150s are good for 3 square feet, give or take. Example: 18" x 24" = 3 sq feet. A 250 watt HPS would give better coverage and penetration for your design, IMHO.
For efficiency, pulling air through the scrubber works better than pushing. The Pringles can filled with carbon is overkill IMO. It will also take a very strong fan to push air through.
An intake fan isn't necessary, again my opinion. Passive intake (no fan) results in negative pressure. The stink has nowhere to go except through the filter. An intake fan may leave you with positive pressure, causing the stink tainted air to seep through cracks and crevices in the cab.
For efficiency, pulling air through the scrubber works better than pushing. The Pringles can filled with carbon is overkill IMO. It will also take a very strong fan to push air through.
An intake fan isn't necessary, again my opinion. Passive intake (no fan) results in negative pressure. The stink has nowhere to go except through the filter. An intake fan may leave you with positive pressure, causing the stink tainted air to seep through cracks and crevices in the cab.
BongCalledYoda
Member
Yeah I am glad to have just used passive intake, I would give that a try cause it can't hurt....
Can you post a link to this please. Sounds interesting
Remote ballast tutorial
http://www.icmag.com/ic/showthread.php?t=36344
Stay safe &
Disco: i think now that i look at the old post the guy had the fan pulling it in like you say and it wasn't mounted but i think put in the box. i'll have to try it with the fan pulling instead. also its not loose carbon but a spongey black carbon filter that will roll up inside the can. what if the intake was wired to 9v instead of 12? cause i was going to use the intake fan for circulation as well.
Yoda: do you just have a fan in the box for air circulation?
Vintner: yeah no problemo i wasn't sure if I was allowed to do a link. he did it a bit differently than i've planned and with a smaller fan.
http://forum.grasscity.com/grow-journals/143292-first-grow-micro-grow-magic-bud-soil-under-flouro-3.html
Yoda: do you just have a fan in the box for air circulation?
Vintner: yeah no problemo i wasn't sure if I was allowed to do a link. he did it a bit differently than i've planned and with a smaller fan.
http://forum.grasscity.com/grow-journals/143292-first-grow-micro-grow-magic-bud-soil-under-flouro-3.html
Nesarb, let us know how the scrubber works out. Sounds like a good idea. As far as the intake, I'm no engineer. I took the ventilation for dummies route. Again, let us know what works and it will help everybody trying what yer gonna do.
Hey all, been away for a short while, good to be back.
Nesbarb, while I try not to provide "canned" answers, I thought you might like to take a look at my feelings on "Active Intakes" I provided for an earlier asker.....
Most large commercial greenhouses match every exhaust fan with a corresponding intake fan, usually one at each end of the structure. While it works great for them, the requirements of a box or cabinet grower differ quite a bit, especially when one is growing in a stealth mode. Using more than one fan is fine, even if the second one is just used within the box to assist in air movement and harden off your stems. The problem arises when you use a second fan to create an active intake. There are three problems that exist with active intakes. First off and most important is that they tend to pressurize your box. If you are trying to control odor, this is the last thing you want. Once the pressure increases, the sweet smell of skunk will find its way out of every crack and crevice in your box and bypass your scrubber. The second problem is that once air moved by an active intake fan enters the box, it will experience a sudden pressure drop. When it does, any particles carried in the airstream will drop out of suspension and deposit themselves all over your leaves and buds. This includes dust, pollen, mold spores, insect larva, and other things you really don't want in your controlled environment. This is the principle of dust-collectors used in factories and clean-rooms. Lastly, because of the pressure drop and air resistance within your box intake fans are not nearly as efficient as an exhaust fan of the same spec's. It’s much easier to suck air out then it is to push air in.
Like Disco and others mentioned, I'd too would go with a passive system first. If you feel you need additional thru-put, consider using two fans in series on your scrubber. Straight-thru tube-type carbon filters can work well with a fan at each end.
One Love All, PD
Trying2learn
New member
Hi all, My girls are 7 days old. One of them has the sides of one leaf curled up towards itself. What is the cause of this? What should I do to make her better?
The plants are like 23 cm away from the 150W HPS. They are in soil. They have not been watered very much.
The plants are like 23 cm away from the 150W HPS. They are in soil. They have not been watered very much.
T2L, Pics and more info would help. There's a form in the infirmary you can cut and paste into your post. Answer as many of the questions you can. Very few require more than a one or two word response.
It might be heat stress, low moisture, nute burn or pH imbalance. But then I'm just guessing. You'll get help from peeps guessing as well so it helps to arm them with as much info as possible. The infirmary form makes it easy, IMO.
It might be heat stress, low moisture, nute burn or pH imbalance. But then I'm just guessing. You'll get help from peeps guessing as well so it helps to arm them with as much info as possible. The infirmary form makes it easy, IMO.
