Yellowing leaves Help please

Looking for some help please. This girl is turning yellow. Nute lockout? Thanks in advance

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  • What strain, Seed bank, or bag seed
  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
  • Vessels: Pots, Grow beds, Buckets, Troths
  • PH of Water, Solution, runoff (if Applicable)
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  • Co2; Yes, No

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Thanks!

Strain= Northern Lights
Light= CMH315
Temp. Day 73. Nights 68
Humidity = 43
Indoor grow
190 cfm 6 inch carbon filter
Plus fans
Sensi bloom big bud
Soil is crappy Promix
Thanks

3gallon pots
Ph in at 6.5
Out at 5.5

Do either product contain N? Kinda doubt it. I would suggest a small addition of grow nutes to maintain some nitrogen. I support mine almost all the way through flower as I don’t like sickly looking plants.

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My other two are fine one the same solution. Crazy

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Ni Trojan to the rescue!

Nah; just genetics. I did a grow last summer with 4 autos and one (gifted) photo: the photo did NOT like the low TDS all the other plants did and was pretty ‘lemony’ looking for most of flower.

Should I up the Sensi bloom a little.? Thanks

I have some fox farms Grow Big as well. Should I add a little of that since it is organic?