just wanna hear some opinions. will be my first grow. I have 6 ft of height. I wanna have plenty of light, if you all think 2 400w hps is plenty, then good, if you all think i need more i will put 3 400w hps in there. Please let me know thoughts. Strain is white widow, hopefully gonna flower 25 plants in there, they are DWC containers. Thanks very much people.
4x8 grow room, should I use 2 or 3 400w hps?
- Thread starter MrWannabe
- Start date
Kash Krop
Well-Known Member
Personally,I would go with two 600w fixtures with digital ballasts.From what I read the 600's are more efficient as far as lumens\light output per watt.Use the enclosed hoods with air intakes\exhausts on the ends that way you can daisy-chain your fans & ducting through both fixtures at once,makes it simple imho.
Iron Lungz23
Well-Known Member
Go 600 watters, the best & most efficient by far!!
threepete23
Well-Known Member
I have a 4x8 room for flowering, and i have 6 plants under 1 400w right now.
Im adding another 400w sometime in the next two weeks, when the money comes through.
Im adding another 400w sometime in the next two weeks, when the money comes through.
Thanks all for replies. 303 I was hoping with just 2 400 watters that I could just blow big fans over canopy and toward bulbs. You think that would work or its best to exhaust lights so that you can get closer to canopy?, Anyone. I have no experience thus far as this will b my first grow so how close could you get 400w bulbs to the canopy? thanks, peace...
Air cooled lights really are the way to go, especially in an enclosed are like a grow tent. It will help you
control your environment better. As for the 400w, they really will be inadequate for a space like that. You
are better off with at least 2 600w lights. The cost is not much different, but the light intensity and efficiency
will make a huge difference.
If you're really not sure what to do, then maybe you should just buy a smaller tent like the DR120, and go
with one 600w light until you get a feel for how far you want to take it.
control your environment better. As for the 400w, they really will be inadequate for a space like that. You
are better off with at least 2 600w lights. The cost is not much different, but the light intensity and efficiency
will make a huge difference.
If you're really not sure what to do, then maybe you should just buy a smaller tent like the DR120, and go
with one 600w light until you get a feel for how far you want to take it.
OK so now ive been thinking, think i will get a 1000 light to go in there, its what i will get eventually so why spend money on a 400watter, i will go straight for a 1000 hps and also have my 2 400 w lights in with it. that should get enough light in there. will order some new hoods to keep the heat down down. I am nearly done making my grow room. I might snap a couple pics show u what im doing and then i can listen to any advice and ideas u all have, i will need help... Think i will use AN's Sensi grow A+B, bloom A+B. Whats peoples thoughts,will that do the trick. thats probably all i will use i dont want to overcomplicate things its my 1st grow, I will be using DWC containers. Later...
skunkiefun
Active Member
I have 3 400w and I wish I would of went with the 2 600w instead. If you're gonna go with the 1000 plus the 2 400s on the outskirts, I think that would the best setup....
MaintMan
Well-Known Member
that sounds like a plan...i was going to suggest that you go w 2 600s but since you already have 2 400s a 1000 in the middle will work wonders...deff look into indipendant airflow for the lights...you still have the heat from the lights in the room if you circulate the air in the room with the lights so even though you are blasting them with "cool" air the heat index is the same, granted that this is better than no airflow and more is better to as point(plants fly away...leaves rip...good luck....grow big and grow at home
RandyRocket
Well-Known Member
i grew this stuff under a 430 watt hps https://www.rollitup.org/grow-room-design-setup/167842-air-handling-4x4x8-430watt-flower.html
12/12 from seed about 1 and a half weeks to harvest.
she was 42.8 grams dry weight.
this one vegged to 18" then flowered
106.7 grams dry
This picture was late in the day on day 68 of a 12/12 from seed.
12/12 from seed about 1 and a half weeks to harvest.
she was 42.8 grams dry weight.
this one vegged to 18" then flowered
106.7 grams dry
This picture was late in the day on day 68 of a 12/12 from seed.
vandewalle
Well-Known Member
jesus that is a lot of light, how big do you want your plants to get? and what yields are you hoping to achieve if you are just doing clones or something you really dont need THAT much light in there. i mean 1800 watts, why not just get 2 1000s?