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Thread: When is the best time to switch for 600w from 400e

  1. #1

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    Default When is the best time to switch for 600w from 400e

    Hi experienced growers,

    Maybe someone could please advise if it would be ok to switch from 400w to 600w when plants are 2 weeks old? Or I should wait till 3-4 weeks?

    As well maybe you could please tell when shoupd I start using Big Bud nutrient?

  2. #2

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    Not rush to swap it over matey. How many plants under it?
    What bulb is it MH or dual spec?
    Some people start with a 600w but with enought distance at least 20inch.
    I prefer to slowly go up . 400w over 4 plants in veg is good for 1st half of veg for me.
    I start with t5. Then jump on 250MH then wen they got couple sets of leaves and roots down 600w can go over. But thats just me.
    Some times to much light at early seedling stage stunts them an can bleach them

    Any pics of them?

    Can start using the BB on week 3 from switching to 12.12

  3. #3

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    Hi, joker_the_smoker,

    Thank you for your reply.

    I have 6 plants, (3 Skunk #1 fem, 3 skunk fem auto, 1 blue mammoth, 1 critical kush). They are going to be 14 days today.

    Using dual spec bulb, planning to get T5 for the next grow.

    Attaching pictures, blue mammoth someway growing slowest and has strange leaves.

    Could you please kindly advise if to start using BB on week 3 so from 21st day after seeding or 3rd week while flowering? And I guess this should be different for the auto flower as they should be flowered already within 50 days?

    Thank you!

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  4. #4

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    Its mostly.a. tempersture thing for light switch buddy . If temps permit go for it , more.light the better

    Organic Grow Journal
    https://www.thctalk.com/cannabis-foru...d.php?t=163164

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