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    4 week flower and brown spots at top leaves

    i have had a weird time with this girl. At first at switch her leaves at bottom turned yellow prem and now leaves at bud have brown spots!!! It’s a small cupboard grow running clu-048 3000k (flower) with extra 660nm red (1000 lumin extra) temps lights on 26C off 20C soil at 6.2ph , tap water...
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    Using correct driver for CLU048-1212C4-403M2K1

    hi I'm 'hopefully' ordering my drivers today but I want to make sure I'm making right choice, I want to drive 2 x CLU048-1212C4-403M2K1 @ UK 230 volts and my choice was going to be the Mean Well ELG-100-C1400a (possible C1050a) wired in series. Please can some one give me some expert advice as...
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    Building 1st cob array - driver advice needed!

    Need Advice on choice of led driver , building a 2 lamp cob array Citizen CLU048-1212 in series but will running a mean well ELG-100-C1400A will it be better than the ELG-150-C1400A ? I am ok with math but not great. Also Please tell me if I am posting in wrong place!! Thanks in advance TJ
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