Single blade fan leaf yellowing!? Help!

[Unklpanda]

So I’m on the 1st week of Veg. Everything is going well as far I know, until the 1st set of true leaf started to yellow. I’m thinking it’s from lack of light, or is it underwatered. Maybe something else?! Thanks in advance! She is in 60% FFOF soil 30% Coco Coir 10% Perlite. Watering with PH adjusted RO water, but sometimes I throw in some liquid seaweed extract and Big bloom. Thanks in advance!

 

[DreamsOfDiesel]

So I’m on the 1st week of Veg. Everything is going well as far I know, until the 1st set of true leaf started to yellow. I’m thinking it’s from lack of light, or is it underwatered. Maybe something else?! Thanks in advance! She is in 60% FFOF soil 30% Coco Coir 10% Perlite. Watering with PH adjusted RO water, but sometimes I throw in some liquid seaweed extract and Big bloom. Thanks in advance!View attachment 953995View attachment 953996

Looks like nute burn in that light but could even just be hungry & eating itself. Please post pic with real light

 

[Unklpanda]

Looks like nute burn in that light but could even just be hungry & eating itself. Please post pic with real light

 

[Unklpanda]

Looks like nute burn in that light but could even just be hungry & eating itself. Please post pic with real light

Also thanks for the quick reply.

 

[DreamsOfDiesel]

View attachment 954000

Thanks. doesnt ffof have nutes in it? Ph to 6.5? RO water usually needs cal mag I think (always used tap water) ffof may have that in it though, not sure.

 

[DreamsOfDiesel]

Nutrient Knowledge: Marijuana Plant Nutrient Deficiency & Excess Chart

Nutrient deficiency & excess chart. A common problem with growing cannabis for yourself is knowing how to diagnose what may be going wrong with your plants.

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They have good charts on nutrient issues

 

[Unklpanda]

Thanks. doesnt ffof have nutes in it? Ph to 6.5? RO water usually needs cal mag I think (always used tap water) ffof may have that in it though, not sure.

Yeh FFOF does have nutes so I only put 1ml of big bloom then I ph to 6.5. I will try putting some cal mag and see how it goes, because some people say it’s okay without calmag and some say put in calmag.

 

[DreamsOfDiesel]

Yeh FFOF does have nutes so I only put 1ml of big bloom then I ph to 6.5. I will try putting some cal mag and see how it goes, because some people say it’s okay without calmag and some say put in calmag.

I've always used calmag but our water is terrible around here. Mine do that at bottom if I dont add calmag.
Nute burn usually shows up on multiple tips.
Everyone has different ways to do things, what works for some doesnt work for others. I'm not using same medium or water supply as you, keep that in mind when I say something works for me.

 

[Unklpanda]

I've always used calmag but our water is terrible around here. Mine do that at bottom if I dont add calmag.
Nute burn usually shows up on multiple tips.
Everyone has different ways to do things, what works for some doesnt work for others. I'm not using same medium or water supply as you, keep that in mind when I say something works for me.

Forsure! I will start putting calmag and see if it helps! Thanks so much!