Build difficulty not enough air maybe?

[Cherry__675]

I’m trying out growing for the first time it’s my second week this setup is from a book that I read. It uses irrigation sprayers and a water pump to recirculate the water like a low pressure aeroponic system. I’ve noticed that my plants have started acting strangely and am currently running under the assumption that it is due to insufficient aeration. Images of the plants + their roots are linked If anyone has any corrections in terms of diagnosis that would be greatly appreciated.

My current plan to help with aeration is to add a Venturi right after the pump to aerate the water being sprayed i also am most getting an air pump to see if that helps also.

If my conclusion/ plan for resolution is dumb please let me know I’d appreciate some help as this is my first time experimenting with hydroponics and I don’t know very much as of now. I can link a YouTube video with the same type of setup I found while researching that’s made for tomatoes and provide more images of the plants thanks everyone for reading the post i appreciate it thanks.

( not too sure how to tag sorry)

 

[Observer]

pH?
E.C? Ratio of the E.C/ppm?
Water temp?

 

[Zen_seeker]

I’m trying out growing for the first time it’s my second week this setup is from a book that I read. It uses irrigation sprayers and a water pump to recirculate the water like a low pressure aeroponic system. I’ve noticed that my plants have started acting strangely and am currently running under the assumption that it is due to insufficient aeration. Images of the plants + their roots are linked If anyone has any corrections in terms of diagnosis that would be greatly appreciated.

My current plan to help with aeration is to add a Venturi right after the pump to aerate the water being sprayed i also am most getting an air pump to see if that helps also.

If my conclusion/ plan for resolution is dumb please let me know I’d appreciate some help as this is my first time experimenting with hydroponics and I don’t know very much as of now. I can link a YouTube video with the same type of setup I found while researching that’s made for tomatoes and provide more images of the plants thanks everyone for reading the post i appreciate it thanks.

( not too sure how to tag sorry)

You need tell us what’s currently going on before corrections can be offered.

I’m a soil person myself but others are able to help you, like Observer. He’s experimenting with this sort of thing right now.

I’m guessing lighting and feed is off but IDK. Yellow and curled leaves.

 

[Driver77]

pH?
E.C? Ratio of the E.C/ppm?
Water temp?

I think I sent this guy here from reddit....if I'm right he has no air pump in the system yet and that was the consensus as to the problem with wilting. The first vid he sent is inside his setup....is that enough for oxygenation or does it need air pumped in from outside?

Here's his description:

"Just started growing these about 2 weeks ago first time trying hydroponics not quite sure why but my leaves have started to curl down my ph is 5.8 my water temp is around 68F and my room temp is around 72F my nutrient levels are at about 950ppm i use the general hydroponics from gecko grow i can’t really seem to figure out what is causing this issue if anyone could help that would be very appreciated"

"It’s a 12 gallon container, the water is about 2 inches below the net pot. I use tap water, I put it through a chlorine filter and let it sit for a day before I add it in. I’ll reduce the nutrients and see if that fixes it. I assumed that wasn’t the case because of yellowing on the bottom leaves but I’m most likely wrong. Thank you."

"I’m using a pump and sprayer heads to aerate the water the water is misting onto the roots and the hydrotun is moist from the mist off the water the roots are white I’ll see if I can add a pic to show what they look like"

 

[Aqua Man]

Plants are way to small to consume enough o2 to cause depletion.

Room temp is way too cold. Tap water at this point would likely have enough nutrients for it to get by 900 is to high. Bring it down to about 400-600.

Can you link a water report from your source water? Just google “your location” and water report

This is almost certainly environmental…. You have fans running? if so can you show placement?

Light cycle, light model, distance and settings?

Humidity levels?

Any media under the neoprene?

You definitely need to get room temps up because your plant temps are likely 68f or lower.

 

[Cherry__675]

pH?
E.C? Ratio of the E.C/ppm?
Water temp?

Ph is 5.8
Water temp is around 68F or so
Ppm is roughly 800
Room temp is 72 f
I’m using rock wool in the net cups
I’m using a viva spectra p1000 it’s full spectrum at 16in and 50% strength which is 50w my light schedule is 16 /8
I have a circulating fan pointed towards the opposite wall
Here’s the water report for my city’s water

https://documents.ottawa.ca/sites/default/files/2024_summaryreport_britannia_en.pf

I’ve been adding distilled water instead when topping up but this is what I’ve filled with originally

 

[Cherry__675]

Sorry link doesn’t work this is my city’s water report

Ph is 5.8
Water temp is around 68F or so
Ppm is roughly 800
Room temp is 72 f
I’m using rock wool in the net cups
I’m using a viva spectra p1000 it’s full spectrum at 16in and 50% strength which is 50w my light schedule is 16 /8
I have a circulating fan pointed towards the opposite wall
Here’s the water report for my city’s water

https://documents.ottawa.ca/sites/default/files/2024_summaryreport_britannia_en.pf

I’ve been adding distilled water instead when topping up but this is what I’ve filled with originally

 

[Aqua Man]

Sorry link doesn’t work this is my city’s water report

Water is good… great infact

Need to get your room temps up and the RE maybe staying a bit wet but as the roots grow that won’t be an issue

 

[Cherry__675]

Water is good… great infact

Need to get your room temps up and the RE maybe staying a bit wet but as the roots grow that won’t be an issue

What’s RE?
Also I’ll turn up the heater that I’ve been using for room temp then thanks

 

[Pipecarver]

What’s RE?
Also I’ll turn up the heater that I’ve been using for room temp then thanks

I think he miss key and meant RH...humidity

 

[Aqua Man]

What’s RE?
Also I’ll turn up the heater that I’ve been using for room temp then thanks

That was my fat finger attempt at RW rockwool

 

[Aqua Man]

I think he miss key and meant RH...humidity

Close

 

[Observer]

I think I sent this guy here from reddit....

Nice

 

[Pipecarver]

That was my fat finger attempt at RW rockwool

I wondered, the H is quite a miss for an E

 

[Aqua Man]

I wondered, the H is quite a miss for an E

Yeah its on my tiny phone and well you all know how i type on that. And my spell correct doesn’t speak English either

 

[Observer]

Overspraying them too I think. (For me anyways)

Shouldn't drip excessively till the next misting cycle.

Had it dialed to 7 minutes but now since it's colder it takes double the time for the Water to be absorbed or evaporated.

 

[Pipecarver]

Yeah its on my tiny phone and well you all know how i type on that. And my spell correct doesn’t speak English either

I bought one of those cell phone thingy's last year, bought a chip or whatever for it and everything. Couldn't figure out how to use it. Sits in a drawer with a bunch of other crap now. I might take it out and dust it off when I start riding my Ebike again but its not something I need or use. Forget trying to type on it. I fked up and made a long password it takes multiple tries to open the fkin thing.

 

[Cherry__675]

Overspraying them too I think. (For me anyways)

Shouldn't drip excessively till the next misting cycle.

Had it dialed to 7 minutes but now since it's colder it takes double the time for the Water to be absorbed or evaporated.

Would that be causing the bottom leaves to be yellowing or like the leaves to curl down? Also yeah i messed up on the sprayer positioning and water was going directly onto the roots i adjusted the sprayers so it should only be deflecting off the water instead of how it’s hitting the roots in the video thank you for the advice I appreciate it

 

[Cherry__675]

Also here’s an update after turning up the heat if anyone is curious I’m gonna use some ph down since the ph changed to about 6.6 and the ppm hasn’t changed since yesterday

 

[Observer]

Also here’s an update after turning up the heat if anyone is curious I’m gonna use some ph down since the ph changed to about 6.6 and the ppm hasn’t changed since yesterday

Keep the pH around 5.5-5.8
They will have trouble uptaking ions much beyond 6

Ppm around 100-400


You're using general hydroponics?

 

[Observer]

Would that be causing the bottom leaves to be yellowing or like the leaves to curl down?

A Combo of things are causing that I think, in relation to:

Environment --> temp/rh and PPFD

And the available nutrients and the RATIO of said nutrients.

 

[Cherry__675]

Keep the pH around 5.5-5.8
They will have trouble uptaking ions much beyond 6

Ppm around 100-400


You're using general hydroponics?

I’m using master blend

I’m dropping the ph down to about 5.6 or so because it seems to like to drift up does that seem reasonable?

 

[Observer]

I’m using master blend

I’m dropping the ph down to about 5.6 or so because it seems to like to drift up does that seem reasonable?

Yea, I even dose down to 5.4 because Im using citric acid right now and its a weak acid, so for me, even without introducing atmospheric carbon via air stones, my pH drifts up quickly usually.

You're fine to do it at 5.5, and when it's back up to let's say 6.2 dose it back down.

This helps ensure ionic availability across all nutrient (element)/ pH ranges.

And aeroponics is a little bit trickier with nutrient uptake, it's a lot more efficient and requires different ratios, and more sensitive to some elements, and you're photon source spectrum plays a role too.

This is highlighted more in High Pressure Aeroponics, but I suspect Even with low pressure aeroponics, compared to soil, or other Hydroponic mediums like coco or RW, or even DWC.

 

[Cherry__675]

A Combo of things are causing that I think, in relation to:

Environment --> temp/rh and PPFD

And the available nutrients and the RATIO of said nutrients.

I increased the temp to around 75 F I’m not too sure about RH and the ppfd is around 300 I can increase it to about 1000 ppfd at max power and i have some supplemental lights to push it a bit higher for during flower if needed I’m using the master blend mix based off their mixing instructions so I’m not too sure about ratios but it’s what I was told would be good for cannabis

 

[Cherry__675]

Yea, I even dose down to 5.4 because Im using citric acid right now and its a weak acid, so for me, even without introducing atmospheric carbon via air stones, my pH drifts up quickly usually.

You're fine to do it at 5.5, and when it's back up to let's say 6.2 dose it back down.

This helps ensure ionic availability across all nutrient (element)/ pH ranges.

And aeroponics is a little bit trickier with nutrient uptake, it's a lot more efficient and requires different ratios, and more sensitive to some elements, and you're photon source spectrum plays a role too.

This is highlighted more in High Pressure Aeroponics, but I suspect Even with low pressure aeroponics, compared to soil, or other Hydroponic mediums like coco or RW, or even DWC.

Oh I’m using citric acid for ph down lol

Might just have to do a system flush to get rid of any nutrients that haven’t been taken up since the ppm hasn’t gone down for about a day would you think that’s reasonable?

 

[Driver77]

Also here’s an update after turning up the heat if anyone is curious I’m gonna use some ph down since the ph changed to about 6.6 and the ppm hasn’t changed since yesterday

Already looking better!

 

[Observer]

Oh I’m using citric acid for ph down lol

Might just have to do a system flush to get rid of any nutrients that haven’t been taken up since the ppm hasn’t gone down for about a day would you think that’s reasonable?

Get some 85% phosphoric acid bro lol


I'm broke and in a bad spot right now, the citric acid was cheap and easy for me to get and goes a long ways


Apparently it's a chelator too, so use both

 

[Observer]

since the ppm hasn’t gone down for about a day would you think that’s reasonable?

Maybe, wouldn't hurt

 

[Observer]

Ur using liquid trio? General hydroponics?

 

[Observer]

I increased the temp to around 75 F I’m not too sure about RH and the ppfd is around 300 I can increase it to about 1000 ppfd at max power and i have some supplemental lights to push it a bit higher for during flower if needed I’m using the master blend mix based off their mixing instructions so I’m not too sure about ratios but it’s what I was told would be good for cannabis

300 ppfd is too high for them too

Mine around 100-150 and showing light stress but that also involves the environmental variables and light hours, DLI, and spectrum, VPD.

That is also contributing to why they are curling down and away, the light is too intense for their young selfs.