Just started noticing this with my recirculating top feed drip with six plants in hydroton and a 15 gallon reservoir. It started out as the yellow blotching on the leaves, not defined, just green fading to yellow here and there. Only on a few close to the center of the plant. Upon closer inspection there are tiny, tiny brown dead spots that are at the center of a yellow blotch. They seem to be spreading and are now on several plants causing when grouped together what looks like a phos deficiency (I do have purple stems). The only spots caused by a deficiency I could find that looked like it are manganese.
At first I thought they were just splashed with res water, but the spots are so tiny. I looked all over it and can't find any signs of infestation. I've been having problems with my ph rising from 5.5 to 6.2 in a few hours recently and I've been putting in ph down. Could this be from ph burn?
I've also been using a lot of organics, sugars and stuff, thought maybe all the potash caused a manganese lockout? Potassium toxicity?
I also recently transplanted and heard that this could be necrotic growth. There are also some flecks on some of the leaves of another plant that look A LOT like heat stress or cal deficiency, but where there seems to be more I read it could be due to transplant.
All help is greatly appreciated.
At first I thought they were just splashed with res water, but the spots are so tiny. I looked all over it and can't find any signs of infestation. I've been having problems with my ph rising from 5.5 to 6.2 in a few hours recently and I've been putting in ph down. Could this be from ph burn?
I've also been using a lot of organics, sugars and stuff, thought maybe all the potash caused a manganese lockout? Potassium toxicity?
I also recently transplanted and heard that this could be necrotic growth. There are also some flecks on some of the leaves of another plant that look A LOT like heat stress or cal deficiency, but where there seems to be more I read it could be due to transplant.
All help is greatly appreciated.
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