To Hell..advice to bring them back

Hello all well these lil' horrors are 32 days old from germination, went into system 17th of last month.

Started them off on bout 300 ppm, first week, ppm diddnt move actuallu went up a little requiring water top ups.
Second week 420 ppm, ppm levels dropped back to 300 overnight so I assumed they hungry, topped up with a little nutrient to keep it round 400.

Third week is where the fun began, increased nutes to 720 ppm, sure enough dropped back to 500 overnight so I assumed they wanted more..added an additive at this stage, "Bio-Earth sea acids" a product I've had great success with, thought they could handle it...

Temps are good, great air flow but not alot of plant movement, thought about getting a pedestal fan in there but honestly dont think I need it.
Humidity has always been "low" meaning below 20%, despite me adding open water containers ect.

Noticed a problem last week, slow growth, new growth yellow and distorted/mutated, just didnt have the time to deal with it so kept nute level same, so 5-6 days on those nodes of growth that were affected are obvious to see now...


Flushed with straight water for last 24 hrs, new growth coming through unaffected but very light green, growth rate seems to have picked up a bit..
Want to change 'em to 12/12 but not before they looking a bit happy again.

Advice on where to go from here?

Start em back on 7-800 ppm which us supposed to be half strength of the nutrient I'm using, or up up it to 900-1000?(1400-1550 for veg, 1700-1850 bloom)
Or go less is more... back down to maybe 400-500?
Also got some silica that I usually like to feed 'em for 1-2 weeks before 12-12, but dont think these ladies can handle this time round..

Advice, opinions, questions anything appreciated. Cheers

too much focus on PPM not enough focus on pH

Ph issues bigtime most likely. That low humidity isn't helping matters. As for exact diagnosis I can't give one, those last three pics look scary.

Silica? Like Pro-Tekt? I use Pro-Tekt every watering for heat stress being I can't always keep my flower at optimum temps and it also helps with nute uptake. Why would you need to quit using silica in flower? I use it up to 2-3 weeks before harvest.

Saldaw said:

too much focus on PPM not enough focus on pH

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Ph has been adjusted to 5.6-5.8 every time I visit room as it always creeps to 6-7 overnight, as per usual..just adjusting ph once per day or occasionaly every two days..

thehole said:

Ph issues bigtime most likely. That low humidity isn't helping matters. As for exact diagnosis I can't give one, those last three pics look scary.

Silica? Like Pro-Tekt? I use Pro-Tekt every watering for heat stress being I can't always keep my flower at optimum temps and it also helps with nute uptake. Why would you need to quit using silica in flower? I use it up to 2-3 weeks before harvest.

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Yeah those last pics where taken after hps kicked in, my bad didnt give myself enough time to take pics before lights on..
Not flowering yet these are in week three of veg, I use a few weeks before flower and through flowering period, but these girls look ravaged need to get them back healthy before 12/12 imo better not to use additives when plants not the best, and it makes ph climb requiring a heap of ph down, these babies need to get their groove back on before flowering...thoughts, where do I go from here nutrient wise? Up or down? They are still on plain water..

few more pics if it helps, few showing minor claw, new growth bit stunted, others just look fried..

Its too hot bro.

*BUDS said:

Its too hot bro.

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Err you mean nute strength not temperature?
Temperatures are 22-33 lights on, 16-24 off..gets a bit hot towards end of 18 hr period as it warms up outside.
Think the issue was nute strength little too strong pushing 'em too quick, crazy distorted growth which I think was the sea acid/nutriboost combo I had running for 5 days or so.

have just mixed up fresh res of 6-700, no additives, gonna top up with only water for a week and see where their at.
will post a few pics then, hoping for lush green growth to return...might get a pedestal in there as well read something bout transpiration/increased water uptake with more air movement helps nutrient uptake..
Anyone know of this? Cheers all for replies.

I'd go in the 3-400 range till they made a turnaround. But that's just me!