Is this a magnesium deficiency?

Treesomewanted77

Well-Known Member
2 plants growing both in happy frog soil
1-gold leaf from ILGM
2-OG Gelato Seedsman

both seem to be having same issue and getting worse
Is this magnesium deficiency or PH too low?

RH is 60%
temp=71 dark and 77 light
I use tap water that is normally 7.0ph and fed some GH Floranova bloom at 1ml per gallon but didn’t PH and after noticing the issue starting I then PH’d and found that the nova bloom lowered the PH to 6.5 maybe little less so I gave them some 7.0ph’d H20 with some epsom salt yesterday but no difference yet may be too soon to tell. I’ve never grown soil before always hydro and never had this issue so kind of clueless on this.
 

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Yes, it is a magnesium deficiency. They tend to use a lot in soil in flower, which I see you are flowering. They also look like they could use more nutrients at this point, and/or top off the soil with some fresh...Most of the nutes in the soil have been used up, which is why they are yellowing.



I use epsom salts...I mix 3/4 of a teaspoon per gallon to their water, nearly every time I water, along with calmag. You could spray them with epsom too, with lights out. They'll come around ...Thye look good!!

PH isn't too important in soil, unless its's way off, which yours wasn't.

Welcome to RIU :blsmoke:
 
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