High pressure Aeroponic , Looking for help

G

gforce3

Well-Known Member
So I have been using low pressure aero for years under HPS lights and the system runs flawlessly.
For the last few months I have been trying true high pressure aeroponics under 4 HLG 650r lights
100psi system.
I am using current culture nutrients which I have tried their recommendedschedules and also used 1/4 and half strength. I am looking for someone to please help me with this who has they HPA system perfected. I have been pulling my hair out with this HPA system.
I have recently warmed up the room to get the plant leaves to 83-85 degrees so the stomata opens. I am thought they took off only to find out a couple days later back to look like crap and seems to be either a calcium deficiency or stress. I can’t figure this out and I’m getting ready to take a sledgehammer to it. If someone knows what they are truly doing and have a system mastered I would make it worth your time to come in contact with me and please give me a hand with this new set up. What throws me off the most is the root masses are beautiful and explode with healthy white aero looking roots. Up top the plant one min goes to a healthy green then a day or two later yellowing browning from the bottom up. I’ve tried all different nutrient doses warmed up the plants and still struggle. Please someone help me out on this. I am not understanding how the plants are struggling so much having a nice leaf temp and a really close to perfect VPD. Is this strictly nutrient related or am I missing something? I currently moved the lights to the recommended 30” away from canopy(I had them farther trying to fix the problem)
Please someone with this system help me out.
 
Wastei

Wastei

Well-Known Member
How big are the root chambers and what pressure are you running at the nozzles?

They look way hungry. I run my system at 1.3-1.6 EC throughout the grow. I would raise the light to the absolute top of the tent and increase nutrient strength. Lower pressures and droplet size require higher EC in the feeding solution.

I think it's caused by to high light intensity and to low feeding strength. Feed according to plant response, not numbers you find listed on different sites etc. Good luck!
 
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G

gforce3

Well-Known Member
Wastei said:
How big are the root chambers and what pressure are you running at the nozzles?

They look way hungry. I run my system at 1.3-1.6 EC throughout the grow. I would raise the light to the absolute top of the tent and increase nutrient strength. Lower pressures and droplet size require higher EC in the feeding solution.

I think it's caused by to high light intensity and to low feeding strength. Feed according to plant response, not numbers you find listed on different sites etc. Good luck!
Click to expand...
This is why I’m lost. I had the lights up high and gave them about 1.6 EC. The pressure is 80-100psi running at 1s on 3 min off. I recently warmed up the room to86 degrees and switch from recirculating to DTW. I’ll see how they react in the next couple days. I have literally tried different scenarios so I have tobe missing something. It’s driving me crazy
 
G

gforce3

Well-Known Member
Wastei said:
How big are the root chambers and what pressure are you running at the nozzles?

They look way hungry. I run my system at 1.3-1.6 EC throughout the grow. I would raise the light to the absolute top of the tent and increase nutrient strength. Lower pressures and droplet size require higher EC in the feeding solution.

I think it's caused by to high light intensity and to low feeding strength. Feed according to plant response, not numbers you find listed on different sites etc. Good luck!
Click to expand...
you think this is happening because they are hungry?
 
G

gforce3

Well-Known Member
The root chambers are 13” deep 12” wide single rows 96” long. I have two side by side root chambers 11” spacing and the nozzles are in between the holes. It literally takes 1 second to fill the chamber with a 40-50mjcron mist. The root mass looks like it’s thriving that’s why I don’t understand why the plants are struggling so bad. I was told my room temps were way to cold so I warmed them up to 86. The leaf temps are now 83-85 degrees humidity 55-60% lights 30” away
DLI IS 50-65 and just now switched to drain to waste so I’ll know in a couple days if that helped. It’s been so frustrating having the low pressure HPS side running with my eyes closed and this side has me pulling my hair out.
 
Wastei

Wastei

Well-Known Member
gforce3 said:
The root chambers are 13” deep 12” wide single rows 96” long. I have two side by side root chambers 11” spacing and the nozzles are in between the holes. It literally takes 1 second to fill the chamber with a 40-50mjcron mist. The root mass looks like it’s thriving that’s why I don’t understand why the plants are struggling so bad. I was told my room temps were way to cold so I warmed them up to 86. The leaf temps are now 83-85 degrees humidity 55-60% lights 30” away
DLI IS 50-65 and just now switched to drain to waste so I’ll know in a couple days if that helped. It’s been so frustrating having the low pressure HPS side running with my eyes closed and this side has me pulling my hair out.
Click to expand...
Pretty sure it's to high light intensity. First one to go is usually Mg followed by K with LED's. Either raise the lights or dim them down. 30" is way to close in my book at 100% strength. New LED strips are way powerful.

I think you're focusing on numbers to much instead of following the plants. Mine probably finished at 60" last run. Neglected ladies but still a good harvest. IMG_20210907_073913907.jpg
IMG_20210913_163137381.jpg
 
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G

gforce3

Well-Known Member
Wastei said:
Pretty sure it's to high light intensity. First one to go is usually Mg followed by K with LED's. Either raise the lights or dim them down. 30" is way to close in my book at 100% strength. New LED strips are way powerful.

I think you're focusing on numbers to much instead of following the plants. Mine probably finished at 60" last run. Neglected ladies but still a good harvest. View attachment 5036651
View attachment 5036653
Click to expand...
what do you keep your room temps and humidity? And can I ask what your nutrient schedule and types are? Also what light do you have your plants under? Thank you for the info brother
 
Wastei

Wastei

Well-Known Member
gforce3 said:
what do you keep your room temps and humidity? And can I ask what your nutrient schedule and types are? Also what light do you have your plants under? Thank you for the info brother
Click to expand...
I keep them at about 23-25C(75-76F) and about 45-55RH. You don't really need that high temps with hydro. Lower temps also helps keeping bud rot at bay at the end of flower. I run regular Jacks or MegaCrop "3-2-1" with 15,5-0-0 part B, 5-12-26 part A and Epsom salt.

I usually run straight 3.6g part A, 2.4g part B and 1.2g Epsom salt(magnesium sulfate) ratio and lower part B (nitrogen) slightly at the end of flower.

I run Meiju A8 650, comparable to your light. Happy to help buddy, that's why we're here! Cheers!
 
G

gforce3

Well-Known Member
Wastei said:
I keep them at about 23-25C(75-76F) and about 45-55RH. You don't really need that high temps with hydro. Lower temps also helps keeping bud rot at bay at the end of flower. I run regular Jacks or MegaCrop "3-2-1" with 15,5-0-0 part B, 5-12-26 part A and Epsom salt.

I usually run straight 3.6g part A, 2.4g part B and 1.2g Epsom salt(magnesium sulfate) ratio and lower part B (nitrogen) slightly at the end of flower.

I run Meiju A8 650, comparable to your light. Happy to help buddy, that's why we're here! Cheers!
Click to expand...
wastei is that all you use for your grow? No other additives or boosters? Do you use hydrogaurd or any else? I’m going to try the jacks like you said with the epsom salt and see how it goes. Thanks again my friend!
 
Wastei

Wastei

Well-Known Member
gforce3 said:
wastei is that all you use for your grow? No other additives or boosters? Do you use hydrogaurd or any else? I’m going to try the jacks like you said with the epsom salt and see how it goes. Thanks again my friend!
Click to expand...
I also use potassium silicate at 30ppm(total 30ppm silicate in solution). I made my own copy of Protekt from Dyna Gro from local sources. For keeping pH stable.

Bleach(sodium hypochlorite) at 1-2ppm residual for keeping pythium and other pathogens at bay. Adding every third day (when I remember to do it lol).

A dash of Drip Clean (1/3 of recommendations) to keep lines and nozzles a little bit cleaner, seems to work well.

I used to use Triacontanol but I got to high nitrogen uptake and retention running "Jacks". It brings a little greater harvest but also prolongs flower. I keep it simple nowadays.
 
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G

gforce3

Well-Known Member
Wastei said:
I also use potassium silicate at 30ppm(total 30ppm silicate in solution). I made my own copy of Protekt from Dyna Gro from local sources. For keeping pH stable.

Bleach(sodium hypochlorite) at 1-2ppm residual for keeping pythium and other pathogens at bay. Adding every third day (when I remember to do it lol).

A dash of Drip Clean (1/3 of recommendations) to keep lines and nozzles a little bit cleaner, seems to work well.

I used to use Triacontanol but I got to high nitrogen uptake and retention running "Jacks". It brings a little greater harvest but also prolongs flower. I keep it simple nowadays.
Click to expand...
You are awesome. I can’t thank you enough. One last question that just popped in my head. I’m wondering if I have too much filtration on my system? I have sediment filter1/4” also have an HL-150 in-line filter and my nozzles have a clog filter on them. Do you think the hl-150 is stripping the nutrients or is that ok? How do you have your filters set up? I also use a 50mr filter bag
 
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OneHitDone

OneHitDone

Well-Known Member
gforce3 said:
So I have been using low pressure aero for years under HPS lights and the system runs flawlessly.
For the last few months I have been trying true high pressure aeroponics under 4 HLG 650r lights
100psi system.
I am using current culture nutrients which I have tried their recommendedschedules and also used 1/4 and half strength. I am looking for someone to please help me with this who has they HPA system perfected. I have been pulling my hair out with this HPA system.
I have recently warmed up the room to get the plant leaves to 83-85 degrees so the stomata opens. I am thought they took off only to find out a couple days later back to look like crap and seems to be either a calcium deficiency or stress. I can’t figure this out and I’m getting ready to take a sledgehammer to it. If someone knows what they are truly doing and have a system mastered I would make it worth your time to come in contact with me and please give me a hand with this new set up. What throws me off the most is the root masses are beautiful and explode with healthy white aero looking roots. Up top the plant one min goes to a healthy green then a day or two later yellowing browning from the bottom up. I’ve tried all different nutrient doses warmed up the plants and still struggle. Please someone help me out on this. I am not understanding how the plants are struggling so much having a nice leaf temp and a really close to perfect VPD. Is this strictly nutrient related or am I missing something? I currently moved the lights to the recommended 30” away from canopy(I had them farther trying to fix the problem)
Please someone with this system help me out.
Click to expand...
What you have here is a classic led spectrum deficiency. Sounds like you were a very good growers until a certain single variable was changed and there is a pattern if you look around. Many good growers + led's = shitty gardens. Yes they can work with lab tight environmental parameters but the light spectrum output is inferior in my opinion :peace:
 
Wastei

Wastei

Well-Known Member
gforce3 said:
You are awesome. I can’t thank you enough. One last question that just popped in my head. I’m wondering if I have too much filtration on my system? I have sediment filter1/4” also have an HL-150 in-line filter and my nozzles have a clog filter on them. Do you think the hl-150 is stripping the nutrients or is that ok? How do you have your filters set up? I also use a 50mr filter bag
Click to expand...
As long as it doesn't contain any carbon you should be good. I only run a 80 micron filter if I remember correctly?

I dont have any filters on the pressure side but I know people run it successfully like @dstroy has a very well built system. I think he filters down to 1 micron. Check out his journals, proper stuff. Cheers!
 
Wastei

Wastei

Well-Known Member
OneHitDone said:
What you have here is a classic led spectrum deficiency. Sounds like you were a very good growers until a certain single variable was changed and there is a pattern if you look around. Many good growers + led's = shitty gardens. Yes they can work with lab tight environmental parameters but the light spectrum output is inferior in my opinion :peace:
Click to expand...
You can't have looked in any actual data with that statement. I have both in my garden and while you're statement was true a long time ago it's not anymore. LED technology has come a long way and is superior in any way possible.

You just have to read and interpret the the actual data. Cheers!
 
G

gforce3

Well-Known Member
Wastei said:
As long as it doesn't contain any carbon you should be good. I only run a 80 micron filter if I remember correctly?

I dont have any filters on the pressure side but I know people run it successfully like @dstroy has a very well built system. I think he filters down to 1 micron. Check out his journals, proper stuff. Cheers!
Click to expand...
wow I think I may have just found my problem. Does anyone know about these hydrolife filters I have an HL-150 I believe this thing is what’s stripping my calcium and magnesium out of my system. It does say it is a granular carbon filter. I was told to use this type of filter but maybe I bought the wrong one. I’ll eliminate it and just use the bag and the sediment filters and see if that helps. I’ll be damned if this was the problem? If I am wrong please someone chime in but it makes sense.??? Again thank you so much for all the help. I’m a perfectionist and an overthinker so this is torture for me LOL Salute!
 
Wastei

Wastei

Well-Known Member
gforce3 said:
wow I think I may have just found my problem. Does anyone know about these hydrolife filters I have an HL-150 I believe this thing is what’s stripping my calcium and magnesium out of my system. It does say it is a granular carbon filter. I was told to use this type of filter but maybe I bought the wrong one. I’ll eliminate it and just use the bag and the sediment filters and see if that helps. I’ll be damned if this was the problem? If I am wrong please someone chime in but it makes sense.??? Again thank you so much for all the help. I’m a perfectionist and an overthinker so this is torture for me LOL Salute!
Click to expand...
That will sort a lot of problems! Yes carbon will strip minerals to certain extent. You should be good with just the sediment filter. Cheers!
 
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