yellow on lower sets

moonstar45

Well-Known Member
Hello experienced growers, i was just wondering what would cause the yellowing of the lower fan leaves on my plant? i assumed it wasn't a deficiency since only a few leaves have been affected and the rest of my plant seems fine

.3 gal airpot, soilless, only fed once at 25%, around 2.5 weeks old, 145w led







 

Jimmy Sparkle

Well-Known Member
I get this all the time because I hand water kind of sloppily sometimes and I splash around a litle bit.. The water collects there and can cause overdrying when it evaporates also wind from your fan and too much heat will do this to leaves where water collects.
 

95'ZR1

Active Member
Just curious how you can see a cal/mag def. In the new growth. It looks healthy and a nice shade of green?
 

TheChemist77

Well-Known Member
ya doc, how u know so much,lol...im interested to know how to see a cal/mag deficiency for any future problems..
 

TheChemist77

Well-Known Member
do u only get those deficiencies in soil?? im guessing the hydro nutes contain all the neccesary vitamins and minerals for growing? i use GH maxi series and love it in my dwc
 

moonstar45

Well-Known Member
interesting. so cal-mag?

i recently just fed it with 50% str of GH micro and bloom (lucas formula) and there seems to be sufficient cal-mag in them hopefully.
 
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