can this be nute burn? none of the other plants have it.

i have seven plants sharing an 18 gallon dwc container. sex unknown, they're just some bagseed.

the solution in the res is a really weak serving of gh nutes.

only one of the plants is affected by whatever this is:



there's another plant sharing this same netcup and it does not exhibit the same symptoms. the newer leaves are starting to show little black flecks at the tips. the older leaves get dryer and yellower and generally deader by the day.

some of the other plants in the solution have mild nute burn at the very tips, but have not shown any problems beyond that.

does anyone know what's going on here?

Res temps, room temps, ph, what exactly a weak serving is, what lighting, how far, temps, humidity. So many questions. I can't diagnose everything from a pic but I'm pretty damn good at picking out what's wrong with a setup.

There's most likely something wrong with the equation and that one plant is just the weakest in the bunch. But it's definitely worth addressing.