Any help on what went wrong?

Im using R/O water, canna coco, Canna a+B (2-3ml per gallon each), calimagic (5ml per gallon), nitrozyme foilar spray, mykos and azos.

Temp 65-74
Mild humidity
Ph 5.7-5.9

I posted a few weeks ago when they started to look like something was going wrong and some suggested deficiency, some light burn/wind burn, and some salt buildup. I flushed them with one gallon each and now every new shoot or existing shoot on the whole plant looks dead. Some foliage is good but the shoots look pretty much dead. Anyone have any ideas on what went wrong? I've had a lot of successful grows , this is my first time losing plants. Are these to far gone to be brought back?

To me it looks like you have Iron & manganese(mm) n zink deficiency with nitrogen toxicity

Did you flush the coco before u used it?
I would run a higher ph too(5.9-6.2)

If it was me , I'd scrap it n start again.

it looks like you have russet mites to me, but i could be mistaken.
also, i've run coco a long time now, and even though its supposed to be "hydroponic" , i've found that i run into problems if i keep my ph that low, i center around 6.1 and let it drift a little either way. if you maintain a ph below 6, you'll have magnesium problems.
those first three pics really look like russet mites , though.

BigHornBuds said:

To me it looks like you have Iron & manganese(mm) n zink deficiency with nitrogen toxicity

Did you flush the coco before u used it?
I would run a higher ph too(5.9-6.2)

If it was me , I'd scrap it n start again.

Click to expand...

Ok I'm going to scrap them. No I don't flush the coco I never have with canna and haven't ever done anything other than precharge the canna bricks with some calmag and lite nutes. I'll start upping the ph some . I think there are russet mites also I pulled a few leaves and looked at them under my loop

Roger A. Shrubber said:

it looks like you have russet mites to me, but i could be mistaken.
also, i've run coco a long time now, and even though its supposed to be "hydroponic" , i've found that i run into problems if i keep my ph that low, i center around 6.1 and let it drift a little either way. if you maintain a ph below 6, you'll have magnesium problems.
those first three pics really look like russet mites , though.

Click to expand...

I'll start upping the ph a little. I do think that you are correct on the russet mites. I pulled a few nasty leaves and found a couple of crawlers. I don't understand I've never had pest issues and moved to a room at ground level now I had a few different types. Some from clones I've received. What's the best way to make sure the mites are gone after I get rid off all these?

if it is russet mites, they're tough to get rid of. i'd get some spinosad( capt. jack's dead bug brew is good), apply it according to directions, then i'd mix up a gallon of half strength and water with it, using it as a systemic.
be sure to use it at least three times as a foliar, about 4 days apart, to get any hatching eggs.
theres other stuff you can use, but they're all pretty harsh compared to spinosad
if you really want to make sure you never get them again, change clothes when you go in your grow area, and quarantine any cuttings till you give them a preventative treatment.