gwaziman001
Well-Known Member
hi all what age should seedlings be before i can use my mh bulb? as i am doing a auto grow i want the best results so i dont want to use a cfl for too long. thanks
when can i use my mh bulb?
- Thread starter gwaziman001
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StonedBlownSkiller
Well-Known Member
when plant is around 6 inches or so..give or take. keep it 12-15 inches away from plant tops and your good. Check with your hand though to be sure. Thats how I run my mh.
gwaziman001
Well-Known Member
thanks for the info mine seedlings seem to be takeing ages there 10 days old they have a set of little leafs on then, but im just useing a 250w cfl bulb im doing the 18 hours a day, was told to maybe try 24 hours?
StonedBlownSkiller
Well-Known Member
![08212010157[1].jpg](/data/attachments/816/816828-a4e2a25358c5077ccb65f69998ef9f9d.jpg)
Id keep 18 and 6. I ran a seedling under mine from the start with light 20 inches away and after 1 week moved it down to 13 inches and its doing great. you could switch now if ya want to. heres my 400w mh seedling
Total Head
Well-Known Member
i threw mine under the 400w hps as soon as i saw green poke out of the dirt. i keep them about a yard away at this point but they are doing fine and the light meter still reads stronger than the cfls that were 3 inches away. as long as they don't get so hot that they dry out constantly it should be fine. as far as 24 hr lights, i don't like it. i notice much better growth when i give them a dark period. i run 18/6 because i'm too cheap to run 20/4. plants need a rest just like people.
johndoecangrow
Active Member
I put them under my MH lights as soon as they have roots but I usually start from clone. I would take a look at your roots as soon as you have a good root ball they are ready.
gwaziman001
Well-Known Member
hi there your plant looks well nice, i want to put them under my 400 but dont want none to die!!!
gwaziman001
Well-Known Member
at what age should the plant have a good root ball?