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Plant has just gone into 12 hours natural light and 12 hours dark. Sprayed it recently with bi-carb due to what I suspect was mildew. Anyway today these brown spots have appeared on the newest growth. Any ideas? Cheers

Dark green leaves, clawed ends, brown spots, that eventually become holes. Is this nitrogen toxicity, or plants to close to the light source, or both? Will just add the spots start of darker green before turning brown, some of the dark green streaks are visible before they turn. Cheers

Hi, I'm trying a 300watt led for the first time, the light is positioned about 30 inches above the plants as per manufacturers spec. However the plants's leaves are starting to yellow in the middle, and the leaves appear to be relatively small. Any ideas, as I'm considering just going back to...

Any ideas about this. Just affecting one plant. Cheers

Hi, got two seperate problem plants at the moment, one has leaves curled up around the edges and brown spots starting to appear on some of the leaves. The other plant has developed a large brown spot on one of the leaves and the leaves has curled up, I think this may be too much heat, but not...

I have no idea what is happening with this seedling. Is it heat stress, over nutes, mould, I have no idea. Any suggestions?

Hi, I'm a new grower and have been growing some autos. They have achieved a smal size due to me having a shitty set up at the start which I've now improved. The plants have been flowering for a few weeks but the leaves have recently started going from a dark green to a light green nearer the...