Fan leaf discolouration

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Ganjamon876

Member
To add on.. my guess is it could be too much calmag. I was having this problem before about 2-3weeks ago were I was using too much of the calmag (2mL per L) every time fed them, then I did a flush with 1mL per L of just the grow a/b with runoff and hadn’t watered them for a week because the pot just wasn’t dry enough. So July 1st was the only time I watered since then. Side note I don’t know my humidity or temp in the tent. I plan on getting a hygrometer today. I don’t know my ph but that’s because since I’m using RO & advance nutrients I figured I wouldn’t need one at the moment.
 
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goofy81

Well-Known Member
Are you in coco?
You're using RO, pure RO from what i've been told by my local hydro store is unstable! so it'll cause pH swings/issues etc.
From my own experience using RO, after I've added A + B and my additives, my pH ends up being in the low 5's!

It's suggested if you're using COCO, you need your pH to be between 5.5-6.3ish. (5.5 for veg and 5.8 for flower).
In dirt and full hydro, the recommended pH is even higher.
Do yourself a favour and get a pH meter. This chart will show you why its semi important. And see where cal+mag is on that chart.


 
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Ganjamon876

Member
goofy81 said:
Are you in coco?
You're using RO, pure RO from what i've been told by my local hydro store is unstable! so it'll cause pH swings/issues etc.
From my own experience using RO, after I've added A + B and my additives, my pH ends up being in the low 5's!

It's suggested if you're using COCO, you need your pH to be between 5.5-6.3ish. (5.5 for veg and 5.8 for flower).
In dirt and full hydro, the recommended pH is even higher.
Do yourself a favour and get a pH meter. This chart will show you why its semi important. And see where cal+mag is on that chart.


Click to expand...
I’m using promix hp soil & I most definitely will
 
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