is this a deficiency or toxicity?

i am growing 3 trainwrecks, 5 jack herers and 6 super silver hazes.
they are growing in organic potting soil mix(no fertilizers) potted in 1 liter superoots airpots.
18 days old from seed.
watered them twice with city water started at 250ppms added 40ppms epsom salt and 110 ppms of hesi tnt. total of 400ppms ph'ed to 6.5

there are yellow rusty spots on the leaves. super silver hazes do not seem to be affected.

please take a look at the pictures.any help will be greatly appreciated.

hey that looks prety healthy, is there anything under the leaves?? (pest wize)
if not i'd say their just some water marks, did you ever mist them??
if your in doubt just flush the pot out afew times then resume feeding

agreed..............

never misted the leaves.

i am seeing some pests on the leaves. a very small green flier and some micro crawlers,i am pretty sure they are not spiders.

planning to use some insecticide.

What specific brand/kind of soil did you use, do you know its contents? Best to get rid of the pests now before they become a problem when you're later flowering, then you might have to add something that'll affect the taste/quality of your yield. Go for something gentle and organic (like AzaMax) that is also a miticide/nematicide, also fungicide wouldn't hurt either. Prevent, rather than react.

Looking healthy, though.

Looks like spider-mites or a magnesium deficiency. Does not look like toxicity to me.

Could be related to pH. You say it's 6.5pH going in, what is runoff pH/PPM? If it's above 7.0, adjust your watering going in (so it's more acidic) until the runoff gets closer to 6.8pH.

If it's spider-mites... well... seems like you already know what to do about that.

i just found the source of the bugs in the growroom.

the pictures are taken from our backyard plant.

can someone identify the bugs?

Shake your plant and if you see little white things flying around then they are whiteflies. Pains in the ass and tis the season. Hard to tell from the pic but it reminds me of the whitefly infestation I had last summer which was also spread from an outdoor plant. If you see em around I would brush all those eggs off the bottom and squish em and spray down ALL of your plants so they do not move to the next one. Tobacco spray works good for me but you can also try a pepper spray according to some and if all else fails get some pyrithrium(<spelling?) stuff. Good luck.

those white things are not the eggs, they are tiny bugs.

i used a safe insecticide on the outdoor plant just for testing before using on my ladies but it didnt work.

the infestation on my ladies in the growroom is not that severe,i can see only a couple on each plant but they like to feed on new sprouts which i plan on take cuttings.

Do they fly around and swarm when you shake your plant?

no they do not fly they try to escape crawling

Hmmm not sure man. I would get a good spray and spray em all down. I haven't had to many bug problems but if you ask in the bug problems sub section I am sure someone can help. Good luck.