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DaveG started grow question 3 years ago
One of my plants has brown spots on the leaves (see photos in week 6)
2 old leaves on the bottom of the plant became yellow.
Ph-value should be ok, 6-6,5
Maybe the plant needs mor phosphor? Can i add more phosphor with the next sprinkle? Thank you in advance for your help.
1st grow-2*Gorilla Glue Auto
15 weeks
1st grow-2*Gorilla Glue Auto DaveG
Gorilla Glue Auto
46 comments · 2 years ago
Week 6
Leaves. Color - Mottling
Mrs_Larimar answered grow question 3 years ago
Its hard to day in that light. try to make some pics in natural the moment it looks for me like calcium-magnesium defiency. ive postet you a helping site in the comments
mad_scientist answered grow question 3 years ago
Hello @Rattus ! Thats a calcium deficiency and a little bit of phosphorus . For the phosphorus deficiency if its only at a few bottom leafs then you should not worry about it. Stat worrying if you notice an aggressive progression. For the calcium deficiency check your water EC before you add nutrients and you need to be at around 0.3 - 0.4 ms/cm. If you are lower add some cal/mag. A cal/mag deficiency can be appeared when under/over watering ( especially when under watering ) and your leafs at some photos seem a little droopy . Make sure you watering correctly and buy an EC meter. Its a very important tool when growing with synthetic fertilizers. Happy growing ! :facepunch:
OutForReal answered grow question 3 years ago
Hello ! Looks likes a phosphorus def to me ! :grin::+1: