Seedlings under HID???

[Gibbz2.0]

Is it possible to put seedlings under a 400watt MH bulb and how high should it be?

 

[hotrodharley]

400-watt should be at least 12" - 14" above the plant top on plants older than seedlings as a start. In my experience. You say seedlings - how old/tall?

 

[doctor.j]

Also what's your ventilation like?

 

[Banana444]

Go more like 3-4' above new seedlings, wait for 2nd set of leaves before you move closer(open bulb, i never bothered to air cool 400w as a fan faced at the bulb has always been plenty). Its pretty easy to cook seedlings under hids, humidity dome helps to keep them from getting too dry, and 1st week above soil they thrive in high humidity. They take off fast starting under the mh once they get a few leaves.

 

[GrowTeam]

Yea I would put it about a meter above. Its a waste of of power but if thats your thing then just keep it up high. They dont need much light at this stage.

 

[innerG]

Not a problem at all to have young plants under a HID

Most modern ballasts are dimmable so you can turn it down to 50-75% if it's really an issue

 

[tropicalcannabispatient]

Is it possible to put seedlings under a 400watt MH bulb and how high should it be?

It is a hid light or mh? In the title say hid but in you first post u say mh? Which one is it?

 

[innerG]

It is a hid light or mh? In the title say hid but in you first post u say mh? Which one is it?

HPS and MH (and CMH, Mercury Vapor and Plasma) are all considered HID lights.

 

[tropicalcannabispatient]

HPS and MH (and CMH, Mercury Vapor and Plasma) are all considered HID lights.

For real? I always thought it was hid- high intensity discharge. Mh- metal halide. Hps- high pressure sodium. I guess i was wrong

 

[innerG]

MH and HPS are both types of high-intensity discharge lights.

HID is a class of lights not a specific kind of bulb.

 

[xSwimToTheMoon]

Imo If your pots are roasting the perlite will begin to scortch. I start seedlings under 250w mh. The hand test is what I usually employ lol.

 

[doctor.j]

It is a hid light or mh? In the title say hid but in you first post u say mh? Which one is it?

For real? I always thought it was hid- high intensity discharge. Mh- metal halide. Hps- high pressure sodium. I guess i was wrong

HID is MH or HPS IDK WTF you learned from LOL SMH

 

[Gibbz2.0]

HID is MH or HPS IDK WTF you learned from LOL SMH

Heh no need to troll on people. People are here to learn.

 

[The_Herban_Legend]

Heh no need to troll on people. People are here to learn.

Why are you asking bruh? I seen your setup, you are tearing it up.

 

[Gibbz2.0]

Why are you asking bruh? I seen your setup, you are tearing it up.

Huh?

 

[Gibbz2.0]

Why are you asking bruh? I seen your setup, you are tearing it up.

Are you wondering why I'm asking about putting under an MH when I have the 400watt CFL beast?

 

[tropicalcannabispatient]

I got lost now. Lol

 

[tropicalcannabispatient]

Anyways, personally i always veg with CFL's or t5 then after 6 weeks then ii put her under the 600 wt hps for flowering with good results

 

[doctor.j]

Heh no need to troll on people. People are here to learn.

I usually share that attitude but the a one was begging it, it's all in fun though, didn't mean to offend.

Are you wondering why I'm asking about putting under an MH when I have the 400watt CFL beast?

Big ass cfls are great for seedlings but [this year] I started putting under 400w MH at 2ft around when 3rd node shows real good and it was a growth explosion I've never experienced. Could also be the switch to DWC but probably both.

 

[Gibbz2.0]

I have 4 100watt equivalent CFLs that I'm using now here check it...the coil is aluminum for reflection and to raise humidity