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Autoflowers, how much cal-mag?

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    Autoflowers, how much cal-mag?

    Seems that I always have plant problems starting when I start giving bloom nutes. I think I'm getting along with using half nutes but should I be giving the full dose of cal-mag instead of half? What's "normal" for Cal-mag? I'm seeing little brown spots on the leaves and I was running the pH high fives low sixes before bloom. So I think she's asking for higher pH and more calcium, just wondering what's a normal dose and... I think I've only been doing cal-mag every other water. Thanks!
    Drying: Strawberry Cough photo started indoors Apr 27. Moved outdoors June 25. Harvested October 8.
    Past grows: Speakeasy Bourbon Berry Auto F1 (Ogreberry x Whiskey Zulu),
    Whiskey Zulu, Trizzlers

    #2
    Growing outdoors in soil I never ever had problems with deficiencies.

    Indoors under these lights big time problems and always after the flip.

    50% nutes is nowhere near enough for my plants. The sativas are happiest around 75% mid bloom but the hybrids need more. One of my hybrids is 50% covered in leaf problems caused by deficiencies, mostly rust, but it was also the fastest growing and has the tallest buds. It looks like it should be dead but it's still going strong.

    I am typically slow to act on seeing changes in my plants which is a mistake...I never had this problem in the past so I thought 'it's only one leaf" or whatever and it will be fine, which was the case outdoors but not under lights. I now realise if I had acted earlier when seeing the slight changes I'd have bigger healthier buds

    I'm currently using 1ml/ltr Cal/Mag with 90% nute strength but I need to start dropping it very soon.

    You will need to adjust depending on VPD lighting & genetics, one solution will not fit all.
    Last edited by Bluey; 04-11-2023, 02:11 PM.
    Flower Room: 11' x 7' x 7.5'H, 480w AC, 13gal/day dehumidifier, 1.5gal ultrasonic humidifier, 60gal (27gal usable) nute tank, 16" pedestal fan & 18" wall fan. Lighting and climate automated. Hand watering.
    Veg Cupboards: ​​​​​​Two 4x2x6H cupboards. SF2000 Evo in one SF7000 in other. Climate controlled and automated. Hand watering
    Aeroponics Low Pressure Bucket: 20W LED. 5 clones & 20W LED 11 clones
    Lights: Mars Hydro FC-E1200W, SF-7000, SF-2000 evo in flower room.
    Medium: Coco/perlite, 7.2gal pots, no drains
    Current Grow: ​​​5 x Photos Franklin's Orange Zkittles x Sour Diesel in flower room, 3 Franklin's White Widow x Sour Diesel Clones, 13 x Orange ZkittleZ x Sour Diesel clones in Aeroponics buckets x 2.
    Last Grow: A mix

    Comment


    • 90Gizmo
      90Gizmo commented
      Editing a comment
      Maybe I'm at 75% too in that I'm giving half bloom and quarter grow.. up until last grow I'd gone cold turkey on grow nutes when I switched to bloom but last time I kept going with 1/4 grow nutes and that seemed to help. maybe I should go 75% bloom, cut or taper the grow and give full Cal-Mag every time ( instead of 1/2 Cal-Mag every other time I'm doing now.) because the cal mag has nitrogen too.. So I'm seeing little brown spots. The big picture doesn't show it but I was looking closely cause I saw little white spots on the leaves. That turned out to be from the ultrasonic humidifier. I'm glad that humidifier season is over.

    • Bluey
      Bluey commented
      Editing a comment
      It might pay to give it not only cal/mag but also PK. I aim for pH6.2 in flower and adjust minor depending on what I consider the deficiency. With autos I am guessing less margin for error. Photos you can slow them down and correct. I know zip about growing autos and a few others here are experts at it judging from some of their pics.

    #3
    20/20 autos grow on the big side. Just finished up trizzlers and she got hungry for pk about two weeks into flower. I would start feeding them full strength cal mag a long with 3/4 strength nutes.
    keeping it green with the soil thing
    love me some frosty autos
    braap
    BRAAPZAI https://forum.growweedeasy.com/forum...162-braaap-zai
    Mephisto run. yeah i know spellcheck https://forum.growweedeasy.com/forum...-memphisto-run
    the fruit basket https://forum.growweedeasy.com/forum...et-auto-runrun
    blue strawberries in a four assed galaxy https://forum.growweedeasy.com/forum...r-assed-galaxy

    Comment


    • 90Gizmo
      90Gizmo commented
      Editing a comment
      Them I'll try it. Last feeding wasn't enough so she needs more.

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