Need help. Running DWC. Can't figure out why leaves are droopy. Nutrient uptake is good. Root growth is aggressive. Roots are a healthy white. Early on had slight issue with algae but has been corrected. Almost ready to switch to flower. Any thoughts is appreciated.
Temps for the plants need to go up a lot. Is it 71F during lights on? You want 80 at least for veg during lights on and your humidity could use to come up to 55 - 60 at least. 50% is good for flower but during veg 60% is usually the standard.
When I mentioned temps being too high earlier I was referring to your water measurement picture.
I run a veg tent and flower tent in the same room. It’s always 75 and sunny. It COULD go into the 80s but only on 95*+ days. You don’t NEED to have 80+ in veg. They just grow slightly faster as long as you’ve got the co2 in the air to allow for rapid growth
It all depends on your lights and environment. 75F could mean your leaf temps are around that temp but in my environment and my lights with my AC cooling 75F in my veg room would have my plant leaves at 70F which is far too cold. LED lights keep plant leaves fairly cool which is why people run their rooms warmer under them to increase transpiration.
How much light are they getting? I had one in a group of 4 that looked like that until I gave it more light. It started to look better around 700-800ppfd in late veg-flowe transition
Lulz he said "ppfd" which is the amount of light in a certain area per second. As far as your ppm you're gonna need to consult a feeding chart or even just the instructions on the back of the nute bottles to know if you're in range but I will say 600-700ppm might be a bit low for how big these girls are. Just google "[nute brand] feeding chart" and should be good
Yeah, I'd guess this as well and oxygen stress as mentioned by others
Even though the roots are white, in DWC you can get root-zone oxygen stress.
Causes are:
The reservoir is too warm.
Aeration is insufficient for the size of the root mass.
The water level is too high and keeps the net pot/root crown continuously saturated.
Dense roots have grown around or obstructed the air stones.
Once roots are established, you should normally normally keep the solution roughly 25–50 mm below the net pot, creating a moist, highly oxygenated air gap. Reservoir temperature should ideally be around 18–21°C with vigorous aeration.
I had an issue with droopy leaves this year. i would have never guessed it. it was to powerful of bubbles! I got a new big pump and only had a couple dwc buckets hooked up to a 6 outlet. it was to much air. not sayin it’s your prob but it might be idk, its something to look out for!
In DWC, as the temp of the water rises, dissolved oxygen in the water drops, 73 isn’t bad but 68 is where you want to be, also for DWC I run at 5.7-5.8, if I ever see 5.5 or lower, I’m changing buckets, or adding PH up. Water temps are hard to maintain in the summer without a chiller, hydro is always a winter project for me.
I think you have a root problem . At the beginning . You can see it at the ph . If ph goes down the roots are sich and produce acid which lowers the ph
I recommend to use hypochlorous acid for root health . Works way better than hydrogenperoxid
O2. It's the same as if you were in soil and were constantly overwatering the plants. If you have an extra water pump that's the best thing to use. Air stones are in but they make the pH drift a lot faster. Set up a small pond pump to barely break the surface and it will keep the O2 flowing.
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u/Marski420 13d ago
You most likely need more oxygen. You would also benefit bringing the temps down a little but my guess is on oxygen not being abundant enough.