Autoflower Flowering?

Do you have Pics of the whole plant as well as the affected areas? What soil are you using? What nutes/supplements are you using, how often, and how much of each? Do you have input and runoff numbers for PH EC/PPM? Temp and humidity of your grow area? All those answers will help us dial in the root cause of your issue. Those symptoms could be caused by a number if different issues that result in Ca deficiency.

Soil: foxfarm happy frog 2/3
Ocean forest 1/3
Ppm in: 395
Ppm out 223
Using grow big 6 ml as needed, upped from 3 ml per watering
I have pics bht idk how to post em more or send em to you.
Humidity 60%
Temp: 72
Water initial ppm 137
Calcium: 35.7 MG per liter
Magnesium: 8.77 per liter

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To add pics click on the button with the mountain in the reply box, select the pics you want to load(you can load up to 5 at a time but if you have any issues you may have to load them one at a time) and wait for them to load completely before you post. It might take a few seconds
The button is in the lower right on the phone version.


On pc it’s on the tool bar above the dialog box. It’s the 7th button from the left.

I’m assuming that’s 6 ml/gal, how often do you feed?

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This is the photo its grown quite a bit from befire, i feed 6 ml a gallon as needed so when i start to see deficiencies. I just switxhed to it so ill see when ill have to feed again though soon. When its not time yet i just do ph balanced water at 6.3 last time i checked the soil ph it was 6.1

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Looks like low P. Your in/out numbers are pretty low so I’m betting she is underfed. Do you have tiger bloom to go with the grow big? It will have the added P and K for flower. I’d suggest following this schedule chart at 50% strength. You don’t need to bother with any of the extras, but the Grow Big and Tiger Bloom are absolutly necessary and the Big Bloom is recommended. IMO the rest of it isn’t needed.


Try to keep track of runoff numbers. When you feed they will go up and then come down a little each time you water. When runoff drops below 600ish PPM it’s time to feed. Ideally you want to feed a strong enough solution to raise the runoff to around 1250 PPM. Usually you’ll need to feed once or twice a week to keep them booming, but frequency might vary some from plant to plant and week to week.

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Oh geah for sure, thing is they arent technically in flower yet only preflower i plan on giving them tiger bloom week 1 of flower that way it can actually put all that added phosporus and potassium to work

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You can go ahead and feed week one flower mix during transition from veg to flower. Usually transition will take a week or two, but the plants nutritional needs start changing pretty quick after transition starts so it’s a good idea to get ahead of it.

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Makes sense ill make sure to start in small doses then, i do got a question though, ive been given them grow big. And even with that the leaves and edges show signs of high phosporous and potassium from what i know. Thin leaves growing and all, do you think itd still be a good idea or just keep track of the plants leaves?

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I doubt you have an excess in P or K with those numbers and feeding only grow big. Most of the time an excess of one element will reduce availability, bind, or lock out another. So generally toxicity will show in the leaves as a deficiency of the antagonized element. In the case of P and K you would probably see Zn, Fe, Mg, and Ca deficiency symptoms which I don’t really see in that plant.

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I gotcha makes sense. Ill feed 6 ml next time and see what runoff is then add some tiger bloom probably a bit then more.i plan on doing 3/4 grow big and 1/4 tiger bloom at 1 week then at 3 weeks 2/4 grow big and 2/4 toger bloom then week 5 1/4 grow big and 3/4 tiger bloom then flush for a couple weeks

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You’ll probably want to ramp up the tiger bloom a little sooner, especially if your not using bloom booster. By the time full flower hits in a week or two P demand will start going through the roof pretty quick.

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What fractions do you recommend and by what week should i be relying on tiger bloom more? Thanks man

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I’m happy to help. I’d suggest following the chart above. Start at week 5 of the chart until your in full flower then you can just follow week by week on the chart. You can mix your nutes then dilute the solution with plain water until the PPM hits your target. That will keep the NPK ratio of the solution in balance while reducing the strength to your target. Towards the middle of flower N demand will drop so you’ll cut the grow big out.

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Makes sense why is the ppm target so high in the chart? 2200 using completely synthetic will burn almost any plant lol. Also what do you recommend flushing with at week 5? 1 gallon ph balanced water for every gallon of soil?

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Partly because they are using the KCl/700 scale but still your right. Most manufacturers recommend ridiculously strong nutes. That’s why I say dilute them down. If you do so you probably won’t need to flush, but if things do get out of wack then yes, plain water till the runoff numbers come down. It might even take more than 1 gal of water per gal of soil.

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Thanks i appreciate it man.

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