Plants on middle/top shelves yellowing faster than bottom shelves?

[bobblehead]

word. I LOVE drip clean.

 

[megayields]

ditto...Drip Clean totally changed my grow around ..props to DHF and Bobble for that little gem of info!

 

[headees]

Yea drip clean is good stuff. I just measured my run off, and have been laying on the nutes somewhat heavy lately thinking this issue is them being underfed. Anyway PH/EC of water going in was 6.5/.2, coming out was 6.3/.6 . Pretty sure thats drip cleans doing right there.