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Has anyone seen these black dots before? They started on some of the fan leaves and now have moved to other steams. I've tried fungicides, extra feeding, nothing seems to help... Any ideas? Thanks. Flyer.

After researching the issue a bit more, I've decided I'm going to take two steps to try to resolve this. I have sprayed Neem oil on the plants just in case this could be a fungus... I'm seeing a bit of black spots on the stems of the affected leaves. We have had a very wet winter.. so just in...

I keep the PH around 5.7 - 5.9 , I change the water every week on sundays. I flush the system every two weeks (to remove the salt build up). This is all per fox farm's schedule. Maybe I should consider changing the nuts... do you have an opinion on General Hydroponics? Thanks, Flyer.

Roots look fine (pic attached) I'm using Foxfarms hydroponic nuts and their schedule. Plenty of air. Bucket temp around 65. Thanks.

Can anybody tell me what is going on with my girls... 3 week flowering, 4X4X5 growbox, DWC, foxfarm nuts. Following their schedule. By the chart above I think it may be a K deficiency but I'm not positive. The leaves eventually get darker from the center out and kind of disintegrate as they get...