White/yellow blotches on fan leaves

Nuggalore

New Member
Details...
6- 23w (100w replacement) cfls. 6500k
1- 100w HPS
Day 43 from seed
GH 3 part nutrients
Hydroguard
DWC in 2 gal buckets
Ppm- 400-500
pH- 5.7-6.2 usually sits at about 5.9 or 6.0
Temp 70-81F. Sits at 79-80 during day and 70 at night
RH- 40-50%
Res temp - 72-73F

What are these blotches? Any help or tips would be much appreciated.
 

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