Hydroponics Forums Discussions - what is causing the yellowing of leaves?

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Bob1	02-07-2009 02:06 AM

what is causing the yellowing of leaves?

In a eight sq meter room with co2 what is causing the yellowing of leaves? when ph is reading about 7 and cf meter is reading about 22?

Ron	02-07-2009 02:06 AM

Lower the pH to 6 or lower 5.5.
22 might be high depending on how your flow meter reads. You can give plants to much co2.

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