Hey there. So I started growing some plants and there were fine till a week ago. Yellow/brownish spots started to appear and when touched they crumble away. They said Its Mg defiency. So I started using superthrive. (1ml) per gallon staring today to see if it helps. Is it really Mg defiency. Or is it something else. Also I'm using miracle grow. I know it isn't good. But its also bad to transplant autoflowers isn't it? So I don't wanna take the risk. This miracle grow fertilizes for 6 months. So does that mean before harvest I should flush 2 weeks before? I'm using 2 t-5's.
Can anyone help me?
- Thread starter rafasosick420
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With miracle grow soil I wouldn't be surprised if its a pH problem. My suggestion is get a cheap pH test kit to see if it is way off of the ideal pH.
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Welcome to AFN. I agree, it's probably related to the slow release nutes in the MG soil. Not well suited for growing autos and know to cause issues. In order to better help you we will need more details. What, if anything have you fed them, at what strength and how often. Also, do you know the pH of your feeds and of your run off. And some pictures would also be helpful. Both of the effected area and of the whole plant, taken in natural light so we can see the true colors.
Alright well my ph level is at 7 I changed my soil to organic choice. Its a nice light mix. I flushed my plants out the othef day and there looking great today. I didn't give then any nutes for 2 days just plain water. I'm giving one of my plants wates with nutes 10-15-10 schultz plant food.
The PH is still a little high so you may want to get it down to around 6.5-6.8.
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