wait 800 ec? thats not low if its electrical conductivity thats a measure of salt and metals. 800ppm is reasonable for nutes.

look at the leaf burn pattern it looks just like this one and it was caused by low ph

Attachment 290484
Mal420xl Reviewed by Mal420xl on . Help please: old growth turning brown.. These girls are Dutch passion auto blueberry and a nirvana blue mystic. Grown in pearlite using Dutch master gold one range. The ph is maintained between 5.2 and 6. They are fed daily at ec ppm 800. Flushed weekly. Please help fix my girls.290482290483 Rating: 5