Dwc plant big problem in flower. Help?

Having this issue and I cannot get to the bottom of it. Looks like late stage K deficiency??? I was having PH dropping issues 2-3 weeks ago which caused some deficiencies but i have now got stable ph 5.7-6.2 daily fluctuations and a steady e.c of 1.2 so I can’t see why the issue is there?? Am I missing something haha. Not sure what to do. Also unfortunately think it’s probably gunna be quite hurtful to the yields

Room temps 25.5 day 18–19 night. 40-45% humidity

looks like late stage nuteburn to me. steady EC is no bueno.

rkymtnman said:

looks like late stage nuteburn to me. steady EC is no bueno.

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I thought the idea with e.c was stable e.c as water level drops? Meaning they are drinking same as eating?

She looks overfed.. I would run straight water for a couple days then cut your EC in half..

Marcorfl said:

I thought the idea with e.c was stable e.c as water level drops? Meaning they are drinking same as eating?

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according to the chart, yes you are right. but i'd rather see EC dropping that proves they are eating.

but back to your pics, they are probably nute locked right now. i'd flush for 12 to 24 hrs and start back on lighter EC

HydoDan said:

She looks overfed.. I would run straight water for a couple days then cut your EC in half..

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man, 3 seconds ahead of me. lmao.

Thank you guys for the advice. Probably gunna kill my yield potential now theres only 3 weeks left in theory lol. You live and you learn.

Would i be able to run straight water with just Silver bullets in? Its just what i run to prevent from root rot and keep a sterile res. Or just plain ph water

Use the silver bullet we don't want root rot too.

Marcorfl said:

Would i be able to run straight water with just Silver bullets in? Its just what i run to prevent from root rot and keep a sterile res. Or just plain ph water

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yeah, run that too. no sense getting root rot on top of this

HydoDan said:

Use the silver bullet we don't want root rot too.

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lmao! that's 2x now.

rkymtnman said:

lmao! that's 2x now.

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At least we agree!

Root temps never get above 20-21. Think that’s about right. Maybe on the upper end

Look at your nutrients,Id change them and see.Rdwc, you shouldn't see plants like that.Something is fucked up.

Your N is quite high also.

Have begun the flush. After 24hrs thinking of backing off to 0.8 ec. Background tap water is 200pmm so will only be adding 200ppm of nutes

Judging by the clawing leaves and necrosis all over the edges there are some PH Issues and Nitrogen Toxicity.

Feed half strength and see if they improve as others have said.

lol added to list of reasons I grow in coco.

Doing a change now after a flush. Going to go for 0.7 ec of just a+b (dutch pro nutes) no explode ph-5.8. Not sure what to expect really. Due to being mid to end flower will they green back up or now being yellow they won’t get any better just shouldn’t get worse

calvin.m16 said:

Judging by the clawing leaves and necrosis all over the edges there are some PH Issues and Nitrogen Toxicity.

Feed half strength and see if they improve as others have said.

lol added to list of reasons I grow in coco.

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You grow in coco because it’s all you’ve ever used. Yet you give hydro advice.