Droopy & slow growth 2.5wks old

Hiya
As title says, my DP Auto Euforia is looking pretty sad. 3 weeks old on Thursday. RH 27%, Temp 28°, res temp 22°. Changed res last night, ppm 300 (water is 150 so only 150 of nutes), 12 hours later it was the same, she looks hungry to me but if it was that i would have seen a change on ppm no? Ph also went up from 6 to 6.8, lowered it to 5.5 this morning to see if she perks up but so far no real improvement. Pump is 400l/h 1 6" disc airstone and 2 smaller bubblers, had good results with exactly the same set up before so i dont think its lack of bubbles.
The only thing that seems out is humidity, could this be the issue?
Cheers!

It looks like PH or nutes. Your PPM's sound fine unless it's some obscure nutes. PH meters are never accurate, you should double check it with some drops.

Cheers, I have a Bluelab meter, it got me through my last grow with no problems but in the past it did dry out so it may well be outta whack.

Just checked res temps, 24.5° which is too high I think. Threw some ice packs in there but she's getting worse...help!

With those temps and that humidity your plants going to have a hard time respiring properly. If you using led your temps should be ok but that humidity with this tiny plant it cannot pull enough water through that small root system so it's shutting down respiration to protect itself. You should be at least 65% RH in those temps.

Aqua Man said:

With those temps and that humidity your plants going to have a hard time respiring properly. If you using led your temps should be ok but that humidity with this tiny plant it cannot pull enough water through that small root system so it's shutting down respiration to protect itself. You should be at least 65% RH in those temps.

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Ok great thanks. So you think the problem is outside the bucket. Humidity seems all over the place, it's been up to 45 and low as 25. I'm gonna buy a new temp/hygro meter today.
Also realized I have the 6 hours lights off at night which is dumb considering I have probs with high temps, that should help.
2 500ml frozen bottles have got rez temps down to 17° which is one less thing to worry about.
Related question, does anyone know how rez temps affect pH and ppm readings? Res was 24° when I checked this morning, ppm 220 I tried to raise it but despite adding nutes it stayed the same, which is kinda weird.
Any ideas?
Cheers!

shiva71 said:

Ok great thanks. So you think the problem is outside the bucket. Humidity seems all over the place, it's been up to 45 and low as 25. I'm gonna buy a new temp/hygro meter today.
Also realized I have the 6 hours lights off at night which is dumb considering I have probs with high temps, that should help.
2 500ml frozen bottles have got rez temps down to 17° which is one less thing to worry about.
Related question, does anyone know how rez temps affect pH and ppm readings? Res was 24° when I checked this morning, ppm 220 I tried to raise it but despite adding nutes it stayed the same, which is kinda weird.
Any ideas?
Cheers!

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Almost all meters have an auto temp adjustment.

I would make sure you have meters that calibratable and the calibration solutions.

Humidity is definitely an issue but there may be more. Once you get the humidity in check then you can rule that out.

Ok thanks i didnt know that.
She really perked up today, even at 35%RH and 28° she was looking the best she has done for a while. Lights out for the last 5 hours, now in cab 58%RH and 24° which i would have expected her to respond well to, but she's gone droopy again. Dunno if thats normal during lights out?
So something has made a positive difference during the last 24 hours, all i can say for sure is that the rez temps have been lowered, and ppm dropped overnight from 300 to 220, which i think tells me i can go ahead and increase nutes by 100.
Cheers!

shiva71 said:

Ok thanks i didnt know that.
She really perked up today, even at 35%RH and 28° she was looking the best she has done for a while. Lights out for the last 5 hours, now in cab 58%RH and 24° which i would have expected her to respond well to, but she's gone droopy again. Dunno if thats normal during lights out?
So something has made a positive difference during the last 24 hours, all i can say for sure is that the rez temps have been lowered, and ppm dropped overnight from 300 to 220, which i think tells me i can go ahead and increase nutes by 100.
Cheers!

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When the lights go out it's normal to see the leaves droop. Just before the lights come on the should start perking up again

OK thanks. Ph has been more stable recently, ppm falling 500 to 420 so ill keep on increasing slowly.
Cheers!

shiva71 said:

Just checked res temps, 24.5° which is too high I think. Threw some ice packs in there but she's getting worse...help!

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24.5c is dam near perfect imo. If it was me I would dump the solution you have and wash the bucket with hot water and some dawn dish washing liquid. Rinse it real good and refill with 1/4 strength of nutrients. Keep cycling that while keeping the ph in range. They should come around and show some improvement then i would flush then fill with 1/2 to full strength and keep rolling.

GreenLegend420 said:

24.5c is dam near perfect imo..

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Really?
She continues to improve and i think maybe ive figured out the problem. I miscalculated water level quite badly. Once she went in the bucket the bubbles were too far below the bottom of the netpot to get wet, it was only what i was topfeeding that was keeping her going. I noticed the hydroton was dry but i was a dumbass and only realised yesterday that water level is too low. Since i raised it shes doing much better. Still not as perky as id like but i think shes gonna pull through...
Cheers!

shiva71 said:

Really?
She continues to improve and i think maybe ive figured out the problem. I miscalculated water level quite badly. Once she went in the bucket the bubbles were too far below the bottom of the netpot to get wet, it was only what i was topfeeding that was keeping her going. I noticed the hydroton was dry but i was a dumbass and only realised yesterday that water level is too low. Since i raised it shes doing much better. Still not as perky as id like but i think shes gonna pull through...
Cheers!

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About 1" below the net pot.

Cheers thats where it is now.
RH35%, 28°, res temp 24°, roots developing nicely, ph6 ppm 570 both stable overnight which is great, getting near the nute sweet spot. 3 weeks old today and she looks fine to me