400w CMH or 600w MH/HPS?

Budder Fingers

Budder Fingers

Well-Known Member
Im running 4 x 3.5gal coco hempys in a 4L x 4W x 6H room with an air cooled hood, no temp/vent issues and it's time to upgrade my X-brite 400w combo bulb (200w MH & 200w HPS) and home made ballast that has served me well through my initial grow.

Which light set-up do folks recommend and why?

400w CMH throughout or 600w MH for veg and 600w HPS for flower?

Cheers!

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a senile fungus

a senile fungus

Well-Known Member
I'm using two 315w CMH in the 4K spectrum and my plants are liking them so far, no complaints other than quality light and not much heat.
 
Budder Fingers

Budder Fingers

Well-Known Member
a senile fungus said:
I'm using two 315w CMH in the 4K spectrum and my plants are liking them so far, no complaints other than quality light and not much heat.
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What type of hood do you have. Mine is air cooled with glass I was just reading that the uv light of CMH gets blocked by the glass??
 
nl5xsk1

nl5xsk1

Well-Known Member
Budder Fingers said:
Looks awesome. What kind of 600?
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Ultra Sun HPS with a mag. Ballast, I think its more important to pay attention to the plants, they will tell you what they need. the room is tight , clean, and ventilated properly, this particular run i'm using Dyna Bloom, and organic soil base
 
Budder Fingers

Budder Fingers

Well-Known Member
nl5xsk1 said:
Ultra Sun HPS with a mag. Ballast, I think its more important to pay attention to the plants, they will tell you what they need. the room is tight , clean, and ventilated properly, this particular run i'm using Dyna Bloom, and organic soil base
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My plants are happy, rooms dialed in high 70s day - high 60s night w/ 40% humidity. OC+ coco/perlite hempy

I'm at three and a half weeks flower and I was hoping the buds would be a little fuller by now, Im happy with my nutes/mix/environment but think some more light would help

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Budder Fingers

Budder Fingers

Well-Known Member
nl5xsk1 said:
Ultra Sun HPS with a mag. Ballast, I think its more important to pay attention to the plants, they will tell you what they need. the room is tight , clean, and ventilated properly, this particular run i'm using Dyna Bloom, and organic soil base
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You running that bulb for the whole grow? And whats that strain? Looks really nice man, great job
 
S

spek9

Well-Known Member
Another vote for 600w HID here.

Why? Experience mostly. Although there are some who use other lamps, in person I haven't seen anything compare to HID. Until I do, I'm sticking with what I know works.

Disclaimer: I veg with LED.

-spek
 
Heygurlll

Heygurlll

Active Member
Ummmmmm..... Hate to sound stupid, tried googling it, what is OC +? Own compost?
edit- nevermind
 
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Budder Fingers

Budder Fingers

Well-Known Member
nl5xsk1 said:
Elephant Bud: Rooted Cuttings go right to 18 hr room,then at 18", into the hps room .
Yours look great and they will start to really put on the weight by day 30 and through out
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BTW when do start the day count? The day you flip or when flowers start showing?
 
nl5xsk1

nl5xsk1

Well-Known Member
Budder Fingers said:
My plants are happy, rooms dialed in high 70s day - high 60s night w/ 40% humidity. OC+ coco/perlite hempy

I'm at three and a half weeks flower and I was hoping the buds would be a little fuller by now, Im happy with my nutes/mix/environment but think some more light would help

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View attachment 3337925
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These will concentrate on heavy flower production , the stretch is done, water and "watch them grow":cool:
 
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