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Forum: Hydroponic Nutrients and Mediums 02-07-2009, 02:06 AM
Replies: 1
Views: 3,963
Posted By Bob1
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?
Forum: Hydroponic Grow Lights 02-07-2009, 02:04 AM
Replies: 1
Views: 3,781
Posted By Bob1
see you at bike week

hello ron, this is Bob from Newport, see you at bike week March-1st.Great page.
Forum: Hydroponic Nutrients and Mediums 02-02-2009, 04:18 AM
Replies: 1
Views: 3,790
Posted By Bob1
turning brown and gray

Ron,
Some of my plants are having a problem. The fan leaves on the bottom have started to show yellow spots at te tips and progressively get worse. The spots end up turning brown and gray. It this...
Forum: Hydroponic Nutrients and Mediums 02-02-2009, 03:04 AM
Replies: 1
Views: 3,725
Posted By Bob1
How many times a day should I flood the system?

Ron, oh wise one, I have my tomatoes in the 11 plant system. I am using a 400 watt MH and am doing a 24 hour vegetative light cycle. The system is in a 4X4 area with mylar on the walls. I'm using 32...
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