What could cause "drooping" in RDWC

DarknessFYC

DarknessFYC

Active Member
Barneys Farm Pineapple Chunk from seed
2nd veg week in the rdwc system.
4x8 tent. 2 MH currently running at 600w/ea.
65f night 82f day.
Trying to maintain 65RH but have been swinging between 50rh and 75rh
RO water
Ph 5.7-6.1
Water temp controlled with chiller at 70f
Airstone in every bucket and top drips
Gen Hydro 3 part with Sensical/FloraBlend/great white.
Currently 1000ppm
4th grow, not a noob but still have a lot to learn.
Topped 3-4 days ago

Not sure what's up here or if it's even a problem yet. This is new strain for me and they have grown very differently than the strains what I have experienced so far. They have had large droopy fans since infancy. I have seen pics of this strain as seedlings and they looked very similar so I wasn't concerned. I assumed that once they got into the system and dropped roots into the water they would perk right up but only a couple look like they are stiffinging up and new growth looks mehhh. Everything I know about drooping has to do with watering which is irrelevant in this case. I thought they might need more food but in the last 5 days I have slowly increased ppms from 700-1100 and haven't noticed much of a difference. Day Temps have gotten a little high a couple days(85f). I have searched a little but not really getting a clear direction.
Should I be concerned? Any ideas on the cause?
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Airwalker16

Airwalker16

Well-Known Member
Lolololol. Don't trip my friend. They are simply sleeping. Lights turning off or not, regardless, they will always go to sleep and MASSIVELY droop when they do. I know this is what you're seeing for certain, especially because you're in Veg.
The light schedule sometimes isn't synced up just right to what they actually are doing. 12 hrs from the time you took that pic, when lights are on, take another one and I think you'll see the difference.
 
DarknessFYC

DarknessFYC

Active Member
Airwalker16 said:
Lolololol. Don't trip my friend. They are simply sleeping. Lights turning off or not, regardless, they will always go to sleep and MASSIVELY droop when they do. I know this is what you're seeing for certain, especially because you're in Veg.
The light schedule sometimes isn't synced up just right to what they actually are doing. 12 hrs from the time you took that pic, when lights are on, take another one and I think you'll see the difference.
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Thanks, I hadn't thought about that, especially since I haven't seen it in my prior grows but I suppose my mis-management of the light cycle over the last 3 weeks could have something to do with it? 24/0 until they went in the tent, 20/4 for the first week, 18/6 since I realized my timer was on 20/4 a week ago. Maybe they are "confused"
 
DarknessFYC

DarknessFYC

Active Member
rkymtnman said:
yeah, that's one of the reasons i run 24/0 for veg. it's easier for me to keep temps stable and not have to use a heater.
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Shit! I like that idea. I haven't done much reading on 24/0 but i haven't read anything negative about it other than power compsumption but I suppose you could run the lights at a lower wattage since they are getting longer/full exposure? Should be a wash right?
 
rkymtnman

rkymtnman

Well-Known Member
DarknessFYC said:
Shit! I like that idea. I haven't done much reading on 24/0 but i haven't read anything negative about it other than power compsumption but I suppose you could run the lights at a lower wattage since they are getting longer/full exposure? Should be a wash right?
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i've tried almost every light cycle for veg and i always come back to 24/0. i like how they grow with tighter node spacing that way. and temps and RH are easier to maintain for me

and i look at it this way, 6 hrs dark per day = 42 hrs dark per week which is almost 2 days they would have been growing under 24/0

i wouldn't flip back this grow, buy you should try it next one and see if you like it
 
DarknessFYC

DarknessFYC

Active Member
Still fighting this, I have 2 theories. #1 N Toxicity. The SensiCalmag is 5% Nitrogen and I am using feed charts that are referencing the use of Caligagic that is only 1% N. IDK if that is enough to cause an issue but I bought more Caligagic and doing a res change tonight as soon as I have enough RO to do it. #2 "drowned" roots. I have plenty of DO but the water level is almost touching the bottom of the nets and the top drips keep the hydroton saturated. Maybe they need more air? The system fills from the bottom and drains from the top so I can't adjust the water level but I can make a spacer and get the net pots up higher which I have done for one of them and I have shut off the to drips. After 24hours haven't seen much change. Problem with this theory is that I built this system 2 grows ago and haven't had issues prior.
I am hoping they are still just acclimating to the light cycle and the topping...
 
rkymtnman

rkymtnman

Well-Known Member
DarknessFYC said:
and the top drips keep the hydroton saturated
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if you have roots already hanging out of the netpots , i would stop the top drip

and if you could keep a 1" airgap b/t the netpot and the waterlevel, that would help too.

as for #1: what nutes/additives are you using? at what EC?
 
5BY5LEC

5BY5LEC

Well-Known Member
I 2nd losing the drip rings. You want the top half of your media to dry out for the most part, once your roots touch the water. The only moisture you should have above the waterline is splash from your airstones if you use them.
I never used drip rings, I just let the splash from the stones do the work from day 1.
Since your drain is hardpiped your gonna have to use spacers like you said.
 
DarknessFYC

DarknessFYC

Active Member
Good news guys. After a res change with the proper calmag and killing the top drips they are perking up. The worst off individual is still a little sad but I think we are in the clear. I am not sure if it was the top drips causing the problem or the excess N in the SensiCal or maybe even just an overall improper nutrient profile in the res but they look way better now. Thanks for the help
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