So I’ve really been trying to figure this out lol.
What order are you adding these nutes to the water? Calmag 5ml first, mix well, and then the others?
There does appear to be mag deficiency, but it seems more than that is going on.
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I appreciate the extra eyes on this one @methodanon ! 
Alright, this is what im doing to mix my nutes:
I use RO water
Add power si @ .5-1ml / gal, let soak for about 15 mins.
If adding cal mag, add then let soak for another 5-10 mins.
Jacks part A + salt added, let soak for 5 mins.
Add part B. Ha… soak for 5 mins.
Adjust PH. Once desired ph is stable, soak for another 5 mins.
Check ph, add hydroguard if ph is still good, then fill res.
Prob wasting a ton of time, but i like to let it soak to make sure chemically, nutes have time to do their thing. Ha…
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Ok cool…
What are you adjusting the ph to before filling the res?
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I think they said above to 6.0:
Last time i checked, res ph was aroud 6.3-6.4 ish a few days after filling @ 6.0
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It’s just such an odd pattern on the leaves that it didn’t look like a macro deficiency to me. But I’ve no experience with this growing style so I can’t be of much help.
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I try to vary a little between fills, 5.9 - 6.2.
Adjusted to 6.2 for the fill last night.
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It is baffling indeed! She appears to be pretty happy otherwise, except for the leaf pattern. Lol maybe leaf texture is a bit different too. Hard to describe. A little leathery maybe? 1st time running into an issue in veg, and only my 3rd run. So my experience is lacking too. 
We’ll see how she does this week after going to 90% nute strength. Waiting to flip till next weekend.
This morning:
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Overwatering can lead to some of those symptoms - kind of crinkly leaves that often droop and look like they have deficiencies. I’m not really sure how watering works with the setup you have. But I guess you’d just want to make sure that there is sufficient oxygen, either through dry back of the soil or replenishment in the res.
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If i understand how octopots are supposed to work, overwatering shouldnt really be an issue.
Its a bottom feed/water kind of system, similar to autopots and kratky.
I suppose it could be possible to run into over watering symptoms if the soil is too compacted and more moisture is being retained in the soil than should be? Im not really sure, and it is proving to be very difficult to find help with issues in octos because its not a very common system.
New growth still showing the same issue after upping nutes and refilling the res on friday.
If it doesnt improve before this friday, i may try loosening the soil in the sleeve and then doing a big flush. Which if overwatering/sleeve being waterlogged is the problem, im guessing a big flush will probably make things worse?
Im out of ideas. Lol
Yeah, I dunno. It looks like there is a fair amount of perlite in the soil mix so I would expect aeration/compaction to be ok. Not sure that trying to loosen the soil would help much, it may just disrupt the root system. Looks pretty happy aside from the color, seems reasonable to just send it into flower and see what happens!
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Lol. If it still hasnt improved after a couple more days i may try flushing the sleeve, rinsing out the res, and a low volume res fill to let the sleeve dry back a bit. Wait for the res to go dry, then a top off and flip. Harvest window is already after Thanksgiving at this point, and growing in my basement during winter in MN really sucks too.
Only new specs on this run were changing to promix hp + extra perlite and using hydroguard. Also added silica but the issue was starting to show about a week before beginning silica additions.
Shes still chugging down the water too. Already gone thru about a gallon since friday.
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Looks like magnesium deficiency. Try upping your PH a bit (7.0-7.5) to release the magnesium. Agriculture News - The Andersons Nutrient & Industrial Group Compare this pic to your leaves: Magnesium Deficiency: Fixing Your Sick Marijuana Plant - The #1 Cannabis Blog | MSNL Seed Bank
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Hey @DirtySock
I agree the pics are a pretty close match for a mag deficiency. Not sure what is causing it to be locked out though.
Any advice for how much epsom salt to use in a foliar spray? Havent done that before. 
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no advice from me on that one.
I think PH is locking out your magnesium. Look at the graph in the first link I provided. Not much mag available at 6.0, and 6.0 is basically what you say you are using. Switch it up to 7.0 - 7.5.
Might be because of the “soil” change. Your PH meter might be off.
I calibrate my ph meter every 2 weeks, so i dont think its that. And all the advice ive seen here is to run octos from 5.9-6.5 max. They run more like hydro than soil, if i understand correctly. Pretty sure id burn up my plant at a ph of 7+. Not 100% sure though. 
thats why im leaning more towards a foliar to see if it helps or not. I appreciate the links and help either way!
@Papalag , ever run ph at 7 or higher in octos before? To treat mag issues
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Ill check the res ph when i get home too. Last res fill was at 6.2, and ph does tend to drift up over time as the plant eats and drinks
Never run octos before. Am watching as I do want to run similar in the future.
Have done hydro in the past using rockwool. Many years ago. Iirc, 7.0 is neutral water, and what I aimed for. Occasionally going lower to grab some micros. Any deviation from 7.0 is the same. So, 7.5 is no more harmful than 6.5. 8.0 is no more harmful than 6.0. Used to use paper tests to measure the ph. Increments weren’t .1. They were more like .5 or 1.0. Don’t worry about changes that are .2, that’s near nothing.
More recently I threw some seabird guano at a mag deficiency and was happy with the results. Just don’t know why ph wouldn’t be the problem. Ph should be matched to the medium, not the container. The water doesn’t interact with the octopot. imo
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No, I’ve never tried that. I usually keep my pH between six and 6.3 they seem to be happy doubt level, but I will try that one day if I see mag deficiencies thank you
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Ha alright!
Ill have to dig around. Swear either octopots site or somewhere was saying to keep ph lower. Lol
First time having an issue in veg, so this is new territory for me.