HLG550 v2 rspec

Relic79

Well-Known Member
They look good to me
Yes in dwc under MH and want to use hlg for flower.
No first time trying dwc.
i did put the hlg in this tent with the dwc and within 3 days plants started looking very droopy. So I put MH back in the tent
I just want to be clear. From the look of your most recent pictures on your current grow, your plants do not seem to show any signs of deficiency.

Drooping could have been many things, including mild stress due to an environmental change (light source).
Since you have just changed to DWC for this grow. I would not change your feed at all, your plants look fine in your most recent veg pictures.

I would also take another shot at hanging the HLG. Hang it at the highest suggested range and dim it down. Light changes can stress plants.
Even if it droops a bit, give it some time to adjust, then try increasing the light over a few days.

If you observe yellowing in this new DWC setup and grow, don't panic and change anything. Take pictures and start a new thread with your current parameters. Someone will be able to help you make small adjustments to fix things from there.

Good Luck! Looks good so far!
 

Relic79

Well-Known Member
OK, now I'm confused. We're talking about these plants here correct?
If you look back at a few of my more recent posts on this thread, I pretty much have what's going on figured out.

OP is running a new DWC grow that is going fine, but drooped a bit when they put the HLG up.
Since the last grow didn't go well under the HLG, they got worried, and posted here for advice using the last grow as the example, those are the very first pics in the thread.

Problem is the first grow is in potted medium, second in DWC, so they are not a good comparison for each other.
The OP has not grown out a DWC grow under the light, and this grow looks fine, maybe it will go just fine.

The main worry now was that the plants drooped when they switched back to the HLG.

My suggestion was, switch back, hang it as high as you can and dim it, then bring it up to full power slowly over a few days and see if the plants responds. If it doesn't, don't change anything, just take pics and post back for help.
 

supernew413

Active Member
Thanks for ur replies I will post more pics in a few days!! Everything else is on point water temp 68,ph 5.8 Rh 52, ppm 920, temp in the tent 81 degrees
 

mpence

Member
I had this issue with my 240w qb288 in my 3x2 dwc grow. At 22 inches(maximum height I could hang) I could only ever run them at 75% in veg, otherwise they would droop. I'd recommend dimming them so that you get around 15k lux at the canopy. Then once they bounce back slowly bring the lux up by 5k ( maybe every 2-3 days) till you reach 40k. Your light is double the power of my qb so you might already be over 40k at 50%
 

supernew413

Active Member
I had this issue with my 240w qb288 in my 3x2 dwc grow. At 22 inches(maximum height I could hang) I could only ever run them at 75% in veg, otherwise they would droop. I'd recommend dimming them so that you get around 15k lux at the canopy. Then once they bounce back slowly bring the lux up by 5k ( maybe every 2-3 days) till you reach 40k. Your light is double the power of my qb so you might already be over 40k at 50%
Thanks for the reply. You are the first to respond that has experienced this!! I just put in back in the tent dimmed so hope I have a better outcome
 

mpence

Member
Thanks for the reply. You are the first to respond that has experienced this!! I just put in back in the tent dimmed so hope I have a better outcome
Yeah it confused me as well, cause it seems with mh/hps you can have them cranked and close enough that they don't burn and they will never droop due to "too much" light. I don't know if it's a dwc/led problem but Ive only ever really experienced it during veg/ early flower. Other than that they love the light and will really take off once you get them dialled in
 

supernew413

Active Member
Day 1 with HLG. Classic signs I have seen before. 1 positive thing Ppm dropped 240 points. I am going to see how if hours for a couple days.. by day there will be purple stems and with in a few after that spots on leaves and will begin yellowing
 

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Relic79

Well-Known Member
Day 1 with HLG. Classic signs I have seen before. 1 positive thing Ppm dropped 240 points. I am going to see how if hours for a couple days.. by day there will be purple stems and with in a few after that spots on leaves and will begin yellowing
I am not sure I'll be the one who ends up solving this for you, but am trying, and I know the more experienced guys are going to ask:

- Exactly how high is the light?
- What are you dimmed at?
- How often do you check your PH and what is it right now?
- What is your nutrient mix? (actual measurements and of what?)
- What type of water are you using? (Tap, RO, etc.)

I'm at the stage of learning where I'm starting to recognize some deficiencies, but most of them still look like Cal Mag to me.

The guys with more experience did mention plants can get hungry for cal mag previously in the thread. I won't try to claim that as my solution, but to my eyes it looks like they were probably right.

I have also learned that it could be cal mag because you don't have enough, or, if you are having ph issues. If you are having ph problems, there could be plenty but it's locked out. Your answers to questions I asked will help for sure!

Also - I am surprised at how fast it seems to happen, especially if you have it up high and dimmed like 50% or so!
 

supernew413

Active Member
So the light dimmed all the way down and hung 40 per hlg manual.i check ph every evening. Ph 5.9 and ppm has dropped 240 points from 940. So general hydroponics flora trio. Last feed I gave 75mls micro, 50 mls bloom, 100 grow.cal/mag 25 mls, 20 mls hydroguard 18 mls silica. Which was 50% of suggested dose. 20 gal of tap water de chlorinated tap water
I did see growth from lights until I came home from work oh and also I need to top of water
 
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