DWC Problems - Nutrient Deficiency?

[moe.red]

I think we lost @SkinnieP

Skinny if you have not met aqua he is a legend in these here parts. I would 100% listen to anything he says.

He’s the one that taught me RDWC. But don’t hold that against him some of his students actually do pretty well.

 

[GoodShit97]

I think we lost @SkinnieP

Skinny if you have not met aqua he is a legend in these here parts. I would 100% listen to anything he says.

He’s the one that taught me RDWC. But don’t hold that against him some of his students actually do pretty well.

Agree.
@Aqua Man is the Man! I mean cmon, it's part of his handle for a reason

 

[SkinnieP]

I haven’t read replies but you have far to much light right now no matter what because the plant isn’t healthy you need to dial it down as low as you can.

Cut that cal mag down to 1/4 dose.

You N is probably high because if it. As seen by the shiny leaves.

Trim off the bottom 2 leaves and get just a gentle breeze over the too of the bucket so it carries the humidity away.

RH at about 55-60%

400ppm is fone but i think your ratios are out so like i say cut cal mag

What does the surface of the water look like from the air? Is it violent?

It won’t drink much its tiny so thats normal.

Biggest thing right not is cut that light way back until this is sorted

Hey man, sorry for the delay it's been a wild week. Luckily I read your reply and implemented your recommendations.
So I dialed the light back 50%, trimmed the lower leaves and switched the nutrients to a granular floraflex just to see what would happen.
Since then she's happy asf and starting to grow quite a bit.

The surface of the water... I wouldn't say it's violent, but it's got quite a lot of bubbles from the airstones. I put two airstones in there and there's some definite improvement on the bubbles. How much is too much with bubbles?

So for the temperature, yeah I want to push higher temps but the issue I'm having is the water temp. It's only a single DWC system so I'm not sure I want to drop $200 on a cheap 1/10 water chiller... only because this IS my first grow and I'm growing hydro dwc & soil side by side just to find out what I like most. So if i push the temperatures to 75-80F that would pretty much put my water temps out of the ideal range, right? That's what's holding me back.

I tried bennies in my other DWC system (RIP OG Kush) and she got root rot(i think) and I just tossed her.
With this one I've been dosing with 2ml of H2o2 about once every 2-3 days.

 

[Aqua Man]

Hey man, sorry for the delay it's been a wild week. Luckily I read your reply and implemented your recommendations.
So I dialed the light back 50%, trimmed the lower leaves and switched the nutrients to a granular floraflex just to see what would happen.
Since then she's happy asf and starting to grow quite a bit.

The surface of the water... I wouldn't say it's violent, but it's got quite a lot of bubbles from the airstones. I put two airstones in there and there's some definite improvement on the bubbles. How much is too much with bubbles?

So for the temperature, yeah I want to push higher temps but the issue I'm having is the water temp. It's only a single DWC system so I'm not sure I want to drop $200 on a cheap 1/10 water chiller... only because this IS my first grow and I'm growing hydro dwc & soil side by side just to find out what I like most. So if i push the temperatures to 75-80F that would pretty much put my water temps out of the ideal range, right? That's what's holding me back.

I tried bennies in my other DWC system (RIP OG Kush) and she got root rot(i think) and I just tossed her.
With this one I've been dosing with 2ml of H2o2 about once every 2-3 days.

Ok that dose of h202 is good.

Water temps are more important that air temp and they influence plant temperature much more. The plant temps will always be higher that the water temperature. Set your environment to achieve 70-72f water temperature and call it good.

It always better to have to little light than too much. If you post pics every few days we can keep up on the progress. but they also will grow into the light so probably not much adjustment will need to be made.

You really don’t need a lot of light until flower when your reduced to 12hr of light only. Thats when you need the intensity.

Look up DLI (daily light integral) to understand the concept of this.

Bit do not go by number they give. Those are only for dialed in professional grows.

If you want an easier grow lower light will do that because it IS the driver of demands on all things

 

[Aqua Man]

Holy shit… thats got to be one of my most cryptic uses of English i have done yet.

Then again maybe not lol. These fat fingers strike again

 

[Aqua Man]

Also adjust your PH to 5.5-5.6 and then wait 24 hrs and let me know what its at. Ideally you want 0.1-0.2 rise no more than that in 24 hrs. Plants like stability…. Actually need stability. If its more we will discuss how to buffer your water to get you in that sweet spot

 

[SkinnieP]

Also adjust your PH to 5.5-5.6 and then wait 24 hrs and let me know what its at. Ideally you want 0.1-0.2 rise no more than that in 24 hrs. Plants like stability…. Actually need stability. If its more we will discuss how to buffer your water to get you in that sweet spot

So can I ask what your reason is for wanting PH in that range?
I think what was happening was a cal-mag deficiency caused by my RO water being too soft / combined with the PH swings.

I've had my PH set to 6.0, added a little epsom salt to the RO water first before mixing nutes, and putting in a little extra cal-mag. Since then she's exploded and looks very healthy. The PH swings haven't been a problem since adding the epsom salts, not sure why. But now it might go up .1 within 24-36 hours.

I'm working on a time lapse video for you guys, should be pretty cool.
Appreciate your help !!!

 

[Aqua Man]

So can I ask what your reason is for wanting PH in that range?
I think what was happening was a cal-mag deficiency caused by my RO water being too soft / combined with the PH swings.

I've had my PH set to 6.0, added a little epsom salt to the RO water first before mixing nutes, and putting in a little extra cal-mag. Since then she's exploded and looks very healthy. The PH swings haven't been a problem since adding the epsom salts, not sure why. But now it might go up .1 within 24-36 hours.

I'm working on a time lapse video for you guys, should be pretty cool.
Appreciate your help !!!

Nutrient availability for the stage of growth. The stability reason is like hot, cold, hot cold on a plant it causes stress and thats always going to cause a slight issue depending on how much stress.

Let me link a thread on PH that i did

 

[Aqua Man]

Thread 'PH Levels for Cannabis Explained by Aqua Man'
https://budbuilders.org/threads/ph-levels-for-cannabis-explained-by-aqua-man.196/

 

[Aqua Man]

You are likely over doing the cal and mag.

The epsom won’t change the PH much and does not contain a buffer. Potassium bicarbonate, potassium silicate are good options when combined with sulphuric or phosphoric acid to create a buffer.

If you want to work in this i can help you. Its easy and very important to learn in hydro

 

[Aqua Man]

Young plants and vegetative stage like a lower Ph 5.5-5.8 until around time to flower then generally 5.8-6.1 i always found nutrient issues when going over 6.2 in hydro although it very much depends on the nutrient ratios used

 

[SkinnieP]

Young plants and vegetative stage like a lower Ph 5.5-5.8 until around time to flower then generally 5.8-6.1 i always found nutrient issues when going over 6.2 in hydro although it very much depends on the nutrient ratios used

I appreciate you. Sorry it's been a while since I've logged in here.

Since our convo the plant has been kicking ass. And honestly, I've kept the PH around 6.0.... When I ran it at 5.5 - 5.8 for some reason it wasn't doing very well.
I'm still going to play around with the lower PH on a separate grow but for whatever reason this OG Kush is liking it a little higher than the recommended PH

So that aside, I wanted to ask you a question. What do you do to intentionally stress the plant in DWC? Like when you're in flower and you want to cause a little stress.... Curious and trying to get set up for when I flip to flower

 

[steamroller]

I grow in soil but LST low stress training works for all plants.
They sell LST clips pretty cheap.

Amazon.com

You could also super crop.

A Beginner's Guide on Super Cropping Marijuana Plants |

Want a LOT of BIG BUDS? Follow our tutorial on how to super crop cannabis plants in a few easy-to-follow steps!

www.10buds.com

I have and do both.

 

[Stoneyluv]

I grow in soil but LST low stress training works for all plants.
They sell LST clips pretty cheap.

Amazon.com

You could also super crop.

A Beginner's Guide on Super Cropping Marijuana Plants |

Want a LOT of BIG BUDS? Follow our tutorial on how to super crop cannabis plants in a few easy-to-follow steps!

www.10buds.com

I have and do both.

i think he means real stress.. like you would do outdoors by ripping up on the stalks in flower, he wants something like that in dwc i think.

 

[Aqua Man]

I appreciate you. Sorry it's been a while since I've logged in here.

Since our convo the plant has been kicking ass. And honestly, I've kept the PH around 6.0.... When I ran it at 5.5 - 5.8 for some reason it wasn't doing very well.
I'm still going to play around with the lower PH on a separate grow but for whatever reason this OG Kush is liking it a little higher than the recommended PH

So that aside, I wanted to ask you a question. What do you do to intentionally stress the plant in DWC? Like when you're in flower and you want to cause a little stress.... Curious and trying to get set up for when I flip to flower

I don’t try to stress the plant personally other than pretty good defoliation. But @tobh or @Dirtbag maybe able to give you some tips on crop steering. Its a more advanced technique and timing and control are imperative to success with it.

 

[tobh]

Crop steering isn't possible in DWC due to it being impossible to introduce drought stress just by nature of what DWC is. However, going heavy handed with the pruning is still an option.

 

[Aqua Man]

Crop steering isn't possible in DWC due to it being impossible to introduce drought stress just by nature of what DWC is. However, going heavy handed with the pruning is still an option.

Yeah thats what i do and thats about it. Never felt i needed to do anything else

 

[SkinnieP]

Yeah thats what i do and thats about it. Never felt i needed to do anything else

I grow in soil but LST low stress training works for all plants.
They sell LST clips pretty cheap.

Amazon.com

You could also super crop.

A Beginner's Guide on Super Cropping Marijuana Plants |

Want a LOT of BIG BUDS? Follow our tutorial on how to super crop cannabis plants in a few easy-to-follow steps!

www.10buds.com

I have and do both.

Cool. I've definitely done a little "LST".... more like HST with these clips dude

 

[SkinnieP]

Ngl I was freakin out a little bit after doing that ^^
But in less than 6 hours she was already looking back towards the light