CMH/MH for veg (my experience)

[swAmp Hydroponics]

I have a 21 day old auto OG Kush. She has spent her whole life up until last night under a 315w cmh with the Phillips 3100k bulb.
(Last night)

After lights out last night, the light was changed to a 600w Yield master MH running @ 400w.

After only 3 hours on, the plant is praying harder and looks better than she ever has.


This was my first try giving the CMH a chance @ veg, and hands down it's an easy decision for me.
MH for vegging and the CMH for side lighting in the flower tent.

I love my cmh for the added spectrum and low heat in the flower tent, but they seem pretty pointless to me for veg.

So, if you're looking for a veg tent light, stick to old school MH IMO.

 

[Idlewilder]

How far off the canopy was the CMH? Have you tried 4k bulbs in veg with your CMH? It might yield better results.

 

[swAmp Hydroponics]

How far off the canopy was the CMH? Have you tried 4k bulbs in veg with your CMH? It might yield better results.

Not sure on distance. Par was around 700.
I only have the one cmh bulb. It was the first light I bought, and I quickly acquired 2- 600w and 2- 1000w hps so never saw the sense in dropping another $100 for the 4k.

 

[Idlewilder]

Not sure on distance. Par was around 700.
I only have the one cmh bulb. It was the first light I bought, and I quickly acquired 2- 600w and 2- 1000w hps so never saw the sense in dropping another $100 for the 4k.

Fair. I’ve also flowered with the 4k bulb with great results. I found the 3k really just good for flower.

 

[Jewels]

but they seem pretty pointless

Before I shoot my feet off,,, are you veging one plant, with 400 watts ?