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Yellowing edges after flipping - hungry or overfed?

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    HELP! Yellowing edges after flipping - hungry or overfed?

    honestly can't tell if its a burn or she's hungry (this time round it is LSD from Barney's topped, lst and schwazzed)

    this happens a lot with my grows, mostly every time i flip to 12/12. as with the pics, it is only at a certain stage/strata of growth
    It looks like a cal/mag deficiency to me. Should I be bumping this up just before and during the 2 weeks after flip???
    I add cal/mag at the suggested 1ml/l all the way through. Canna A+B + PK 13/14 as per canna's schedule

    Coir in autopots (autopot.co.uk) using Canna A+B, Flairform CMX. pH @5.5-5.8 in veg, 5.8-6.4 in flower
    Sunny crx 1500w (nominal - 270W measured draw) LED, 0.6x0.6x1.8m tent.
    Air circ. Temp and RH always kept within the mighty Miss Nebula's guidelines. I'd be lost without this site and her tutorials...

    #2
    Hello babycthulu
    This isn't a cal mag problem this is a potassium deficiency.
    how do you feed your plants? Every watering? Every other watering?
    Is that canna stuff that PH perfect crap?

    Weed Pharma Cannabis puberty strikes again
    https://forum.growweedeasy.com/forum...-grow-off-2020

    Comment


    • babycthulu
      babycthulu commented
      Editing a comment
      awesome - thanks for responding
      I feed them via a reservoir. The autopot is a gravity feed to a tray system (a float valve regulates the level in the tray) so it's kinda like a hydro system.
      Just regular Canna a+b which i then have to pH adjust. I mix ~8l at a time and monitor it's pH
      Nearly out of canna nutes, so will be trialing something else next round...

    • Mr.furley
      Mr.furley commented
      Editing a comment
      I have seen those autopots but haven't used them, they look cool. Glad to help and good luck.

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