Clones in cloner turning yellow with brown dots

I decided to try running an old cloner i had. Tooke clones and everything g has been going well. Even have some rooted but over the last few days the leaves have turned yellow and a little brown with brown dots. The p.h. Is 5.6 and I used r.o. water. The clones were dipped in clonex gel. Not sure why this is happening. I have no stem slime.ive included some pics. Any help would be greatly appreciated. Thank you guys

Some strains are just stubborn to clone and will use up all the mineral stores in the leaves in the process.
You can add a little bloom nutes like Dyna-Bloom at about 0.3EC to try a give them a little help.

Clones are actually pretty tough. I've had clones where almost all the foliage was toasted pop new shoots from the nodes after going into some media.

GL

7CardBud said:

Some strains are just stubborn to clone and will use up all the mineral stores in the leaves in the process.
You can add a little bloom nutes like Dyna-Bloom at about 0.3EC to try a give them a little help.

Clones are actually pretty tough. I've had clones where almost all the foliage was toasted pop new shoots from the nodes after going into some media.

GL

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I have about half that are rooted. And they look like crap up top like you said. Should I raise the ppms in the cloning machine? I'm currently at around 230.