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Thread: When to start pk13/14 on SOG.

  1. #1

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    Default When to start pk13/14 on SOG.

    Should I use it straight away or last few weeks?

    I know canna have changed their info on this in the last year or so. They used to say last few weeks, but now they say throughout flower.

    Thought it might be different with small plant?

    Thanks

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  3. #2

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    I tend to wait until they are heavily in flower
    It's Not What You Know, It's What You Can Prove

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    Is it better to cut the a&b out completely when using pk?

    I’ve read quite a few people do this, as the lack of nitrogen for 3-6 days helps breakdown the chlorophyll Before harvest, and it prevents burn from using full dose a&b and full dose pk.

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    I’m using it @0.3 m/pl all they way though. Never used it like this before, hopefully it works out!

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    Quote Originally Posted by Elias View Post
    I’m using it @0.3 m/pl all they way though. Never used it like this before, hopefully it works out!
    I’ve been doing the same, but I think the big 3-7 day dose canna recommends is better.

    I’m just thinking the high dose with the A&B will burn them?

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    Seems canna never stated throughout flower as I’ve seen mentioned in a few different places.

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    Quote Originally Posted by J81 View Post
    I’ve been doing the same, but I think the big 3-7 day dose canna recommends is better.

    I’m just thinking the high dose with the A&B will burn them?
    When I used it like that, I never went over 0.5m/pl. always found anymore than that burn them...

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    Quote Originally Posted by Elias View Post
    When I used it like that, I never went over 0.5m/pl. always found anymore than that burn them...
    This is why I wanted to be careful. When I used to use full hydro I had to adjust ph all the time. With coco a&b it falls into the correct ph range with tap water.

    I might get a EC tester. Use pk at 15ml per 10 litres then bring the EC up with the coco a&b if I need to.

    I think there is a lot of “bro science” on forums with PK.

    My thinking is that PK is bud food, so it’s better to cut back on the nitrogen rich A&B rather than PK?

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