Im normally to full power on my nute solution around week 4. I would definitely bump it up from 50% imo. If it was my grow i would Jump it up to 75% then 100%.
I feel ya on the weather. Dehumidifier makng my grow room like 10 degrees hotter.
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I havent used Jacks with octos but inhave ran some incredibly high ppm solutions with minimal to no burn i dont know if its how octos work but it seems very very hard to burn plants in them.
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I feel the dehuey heat pain too. Lol works great during lights out. 73 - 74°ish, and rh around 55-60 (because its struggling to hit that 50% lower range, and just keeps running). Vpd around .7 -.9ish.
If im not home to dink around with the dehuey settings when or before lights on, rh tanks and temps spike over 82. (Ive heard 80-84 would be good for the plant. Almost impossible to maintain that without letting my old ass house get to 85 upstairs. Basement would still prob be 75. Lol)
Maybe ill try bumping it up in steps. I just upped yestetday. Maybe let it soak for another day or 2, then drain and refill the res.
This is only my 3rd grow, but theyve all been in octos. And im learning that in order to ‘reset’ nute ratios and stuff, i have to pump out the res and do a complete refill. Its not too hard to do, but takes more time on top of mixing jacks 321 and then letting ph buffers soak a little. 
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I just let the plant empty the rez. Once the roots hit the rez they will go bone dry.
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I usually do too. If the plant seems happy?
But if there is a nute deficiency or excess issue, wouldnt i want to try and fix it in the res instead of allowing the plant to keep soaking in a mix thats causing problems?
I def still very new to growing too. So im still trying to educate myself about identifying issues correctly, and learning what to do to fix it in octos. Tough to do when octos arent a super prevalent growing style.
Roots are def taking over the res too. Ha…
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I have never had rez issues with octos. Once i found my ratios for the nutes I use. I dont even check PH at this point. Unfortunaly i dont have any knowhow about Jacks but nothing should really change between watering especially if you are using RO water. I always let my rez get completely empty before adding new solution to avoid any deviation in the nute solutions. Only time i will check is if I add something to my base mix. Like this week i added a PK boost for my week 6 of flower mix. Just checked ph to make make sure the new addition f things up too much. I have ran ph anywhere from 6 to 7.5 with no issues. Promix is buffered and seems to be pretty forgiving when it comes to ph.
Run dry, add new nute solution , run dry, repeat.
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Hell yea.
What were/are you running for nutes?
This is where im still struggling. I have a general grasp on core nute (NPK) and micros. But have no clue how to “dial in” nutes for the current plant based of what its showing in its leaves. Def a learned skill. Ha…
Im gonna let the most recent res fill ride for a bit. See what happens!
Appreciate you and your time! 
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Base nute I use Urban Farm vegetable for veg and Urban Farm Garden of Eden for flower. They are liquid ferts not powder like Jacks.
I have grown with just that with no issues.
Overtime i have added to my solution
Per gallon on top of my base nute i use
2ml of Hydroguard
5ml slica blast
2ml canna rhizotonic(not sure if im going to continue use once bottle is used up)
3ml of cal/mag mid to late flower of deficiency shows up(i use hard water so i get a good amount through my tap, i have used RO water before and i would add Cal/Mag every other watering).
Too be honest i dont dial much in lol. I just go off my schedule. I dont feed for what the plant looks like just by my schedule. Early veg i use 3ml of fert, 6ml mid veg, 12ml after a month till i flower. I will continue to feed veg formula
to roughly day 16 of flower so it has the extra N for the stretch. Once plant has stopped stretching i switch to full power garden of eden at 12ml a gallon. Do this to 2 weeks before harvest which then go water only. Like i said i dont test Ph, ec or anyhting. Might get some slight nute burn on the leaf tips but i dont worry about it.
Most nute formulas are pretty complete so deficiencies that are going to be really bad for the plant probably arent going to happen if you follow the feed chart. I dont fret over slight discoloration or imperfect leaf conditions. Cal/mag is really the only thing i look out for which for me only happens late flower which if i decided to ignore probably wouldnt affect much.
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This is such common sense when I read it, but never crossed my mind. Lol
Read somewhere that its common to ‘buffer’ RO water with cal mag every top off. I did that thru my first 2 runs, and both ended up with some weird lockout kind of deficiency 4-6 wks into flower.
Researching that issue i came to the conclusion that i was overdosing on cal/mag combined with an overpowered light, caused the issues.
Ill try starting the every other week cal mag thing at the next top off. Trying to anticipate what the plant needs! Ha
Really appreciate the run down!
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Res check, and it is brimming with roots.
Air(?) roots too! Think theyre pretty neat!
Tempting to flip tomorrow since the res is almost empty. But also should give her a good defol before flipping too.
Guessing if i defol the larfy branches and more bottom leaves, i should prob let it recover for a week before flipping?
Or will it be good to go and recover with bloom nutes for 2 weeks?
(Will post a whole plant pic once the light comes on in about an hour)
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Nah man. I defoliate the day before i flip to 12/12 and again week 2/3 of flower once it has stopped stretching.
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Perfect! This is my 1st real attempt at trying to pay attention to defoliation with plans to lollipop later.
Hopefully the res is empty after work today so i can feed week 1 of jacks 10-30-20 (bloom) and then flip my light timer. (I run my lights at night)
Wont have time tomorrow afternoon either, have a wedding gig about 2.5 hours away and the band is staying at a hotel after.
She got a hair cut last night. Looked rough as hell and really unhappy afterwards. Thought i took too much… lol shes perked right back up over night thankfully!
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Good morning bud! Fellow Minnesotan here! If your ever interested I have a sweet Durban Poison i had for about a year now and i could get you a clone or 2 if interested. Youll really like it since you like Durban… i also like it alot!
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Your plant looks like it is growing ok but I think the leaf color is a bit concerning. Can you test the pH of the res?
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@Sailorboy greetings! That could be cool to get a different durban cut! Growing in my basement last winter was a huge pain in the rear, so not sure if ill try that again this winter or not.
@gedLang i agree they look off.
Last time i checked, res ph was aroud 6.3-6.4 ish a few days after filling @ 6.0
Roots look great.
Last feed was around 1.4 - 1.5 ec
Been trying to crack this issue for weeks. Nothing is helping, but she keeps trucking along. I could veg forever trying to fix it, but at some point i need to just flip and see what happens.
Only thing i havent tried, is flushing the sleeve…
Been having a hard time controlling humidity swings in my lung room this year. Not sure if thats part of it, but the plant seems to be doing better as the weather and lung room environment have been more stable lately.
Im still tempted to wait another week before flipping so i can bump up veg feed strength more to see if this pheno is just… that hungry?
Anyone have any advice for flushing in octos? Would not surprise me if im running into lockout due to salt build up, or maybe compaction? Maybe soil ph is out of whack? Its the only thing i havent tried yet, and am out of ideas on what to try. 
I did flush the sleeves on my first run, but that was after an issue popped 4-5 weeks into flower after feeding pretty heavily the whole grow. Sleeve was pretty white on the lower outside. Leaves didnt recover, but didnt get worse at that point. Made it across the finish line with decent buds. Ha…
Edit: guess i havent tried a mag foliar spray either. Looks kind of like a mag issue based on pics i see online, but not sure how its happening since ive been adding cal mag almost every fill. Amd i fed light at first and have ramped up. Unless theres lockout in the soil? Only things i can come up with are soil issues (ph and or buildup), vpd issues, or light intensity? Been at 490ish ppfd for a couple weeks now… would think she’d want more by now?
Issue has been going on since wk 2-3ish of veg. So idk what to do. She has filled out nicely despite the issue.
I would not recommend flushing a octo like floding the media via top watering. I run plain water in my rez that last 2 weeks of flower as a “flush” never during the growing period.
Are you at full power veg nutes yet? To me they look hungry for nitrogen. I would go full power veg nutes ph’ somewhere in the 6s . That is a big established plant, even if you get alittle bit of tip burn from the nute shock its not going to kill it if you are using what the brand says is the correct amount.
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I know the consensus is to never top water after planting, but their website does say you can do a flush if needed if salt/nute buildup is suspected. I think it did help on my 1st run when i was overfeeding for most of veg and beginning of flower until the issue popped around wk 4 I think. 
Im at 70% as of last weekend until today. Res is nearly empty right now. Big reason why im debating on bumping feed strength up again for 1 more week before flipping.
She did get a pretty major haircut last night too. Lol
I think thats the nudge i needed. Going 90% veg nutes today, wait till empty, then flip on the next fill.
(Feel like 70% to 100% is a pretty big jump… scared im going to nuke it! Lol)
