Hi everyone, I started growing the Think Different for the first time and it was good until now it shows some problems on the older leaf, anyone can name it for me and giving me the solutions for this. I'm thinking about Nute burnt or pH fluctuation but I'm not sure yet so calling out for help. Many thanks. Here are the pictures.
The whole plant looking pretty good but when we see more carefully we know that the oldest leaf look crispy and yellow plus brown spread. Then the new leafs have started the yellow on top of the newer leaf.
My current PPM is around 500, the pH range from 5.7-6.5 and this plant is 16 days old. I'm thinking the nutrient may go to much for it when it's just 16 days.
Btw, I'm using the General Hydroponics Flora series with the schedule from Growweedeasy.com for hydroponics.
I have to admit that at the first week of seedling I didn't check the pH of water everyday, so after one week the pH went up to 7.5. In the second week of Veg, sometimes I let the pH went up to 6.5 or 6.7 from 5.5 at the next day. Finally in the third week of Veg, I know how to adjust pH correctly from 5.7-6.2, and I have done it for 2 days. Perhaps, the fluctuation of pH made those older leafs became yellow and potassium deficiency.
:no: :no:
The whole plant looking pretty good but when we see more carefully we know that the oldest leaf look crispy and yellow plus brown spread. Then the new leafs have started the yellow on top of the newer leaf.
My current PPM is around 500, the pH range from 5.7-6.5 and this plant is 16 days old. I'm thinking the nutrient may go to much for it when it's just 16 days.
Btw, I'm using the General Hydroponics Flora series with the schedule from Growweedeasy.com for hydroponics.
I have to admit that at the first week of seedling I didn't check the pH of water everyday, so after one week the pH went up to 7.5. In the second week of Veg, sometimes I let the pH went up to 6.5 or 6.7 from 5.5 at the next day. Finally in the third week of Veg, I know how to adjust pH correctly from 5.7-6.2, and I have done it for 2 days. Perhaps, the fluctuation of pH made those older leafs became yellow and potassium deficiency.
:no: :no:
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