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Thread: Going off the idea of Blue for veg Red for flower

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    Default Going off the idea of Blue for veg Red for flower

    I know it is the norm (and maybe now somewhat dated) but in my mind things are changing ie: blue spectrum for veg red for flower.

    I do like to mess around with light spectrum and recently installed a CDM daylight for veg/seedlings/clones. To be truthful can't say I am impressed, growth is just to slow and the light looks a bit harsh.

    My next plan is to put the Daylight (blue) CDM (Horizon reflector) in with HPS as a supplement lighting during flower. I will replace the Daylight lamp with an Agro bulb still in an Horizon reflector for veg hopefully this will give a fuller spectrum and more growth without to much stretch ie: plants looking for light (or a fuller spectrum of light).

    Any thoughts or input appreciated.
    Last edited by toblue; 09-12-18 at 07:45 PM.
    TO GROW A PLANT YOU NEED TO THINK LIKE A PLANT


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    Ive read recently that high blue ratios can increase resin at the cost of yield. A good trade for processing I suppose. I dunno how well you would be able to control those ratios without using something like LEDs to select specific light bands instead of broader K ranges.

    I dont remember the article's location but as I recall they had a %15 blue range for optimal growth with resin increasing up to a %45 range before plateauing without increasing CO2.

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    you can and lots do grow from start to finish using a duel spectrum the best of both spectrums combined but it lacks any UV
    blue mH has a slight uv output, but 10k bulbs go full uv 'always wear uv glasses in the gRoom'

    as has been said, more uv = more resin

    for me it's about potency first not maximizing yield so i go mH/Duel/10k uv bulb,
    but that's just what i prefer, i understand lots use cooltubes that remove 10% light output due to a piece of glass and can't swap bulbs easily unfortunately





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    Quote Originally Posted by toblue View Post
    I know it is the norm (and maybe now somewhat dated) but in my mind things are changing ie: blue spectrum for veg red for flower.

    I do like to mess around with light spectrum and recently installed a CDM daylight for veg/seedlings/clones. To be truthful can't say I am impressed, growth is just to slow and the light looks a bit harsh.

    My next plan is to put the Daylight (blue) CDM (Horizon reflector) in with HPS as a supplement lighting during flower. I will replace the Daylight lamp with an Agro bulb still in an Horizon reflector for veg hopefully this will give a fuller spectrum and more growth without to much stretch ie: plants looking for light (or a fuller spectrum of light).

    Any thoughts or input appreciated.
    I’ve been trialing this for few grows now and I think all hps is better, plants directly under the cdm would always mature quicker than the hps but buds weren’t as big


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    where's joker when you need him

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    Quote Originally Posted by MonsterEnergy View Post
    where's joker when you need him
    you raaaaaaaaaaaang

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    MH for the win for me, swapped out for hps flower bulb after stretch has finished. thats just my pref though had decent results with dual spec to though. horse for courses ~

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    Quote Originally Posted by joker_the_smoker View Post
    MH for the win for me, swapped out for hps flower bulb after stretch has finished. thats just my pref though had decent results with dual spec to though. horse for courses ~
    CFL ?

    Sent from Thames Iron works

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    Quote Originally Posted by Ironman View Post
    CFL ?

    Sent from Thames Iron works
    jesus..... drops the mic..... am off

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    Quote Originally Posted by Ironman View Post
    CFL ?

    Sent from Thames Iron works
    Quote Originally Posted by joker_the_smoker View Post
    jesus..... drops the mic..... am off
    Hahahaha! You bastards cost me some coffee :\
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    Quote Originally Posted by WhIpLaSh View Post
    Hahahaha! You bastards cost me some coffee :\
    You ever want rid of Joker, get the compact fluorescent out pmsl

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    Quote Originally Posted by Ironman View Post
    You ever want rid of Joker, get the compact fluorescent out pmsl

    Sent from Thames Iron works
    truth be told though am guilty of using a t5 early on

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    Quote Originally Posted by joker_the_smoker View Post
    truth be told though am guilty of using a t5 early on
    I'd like to think that's all my doing

    Don't tell me, you put the MH in and the t5 goes back in the bedroom next to the bed?

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    Quote Originally Posted by Ironman View Post
    I'd like to think that's all my doing

    Don't tell me, you put the MH in and the t5 goes back in the bedroom next to the bed?

    Sent from Thames Iron works
    Haha t5=dirty mag time pmsl

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    Red Light.


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