What causes a single finger curl?

[goingrey]

Like this:

EC is 1.4, pH is 6.2 (I have been letting it rise to about 6.5 and then adjusting it down to about 5.5). RH is pretty high, 60-70%. Strain is CBDenergy from Paradise but I see the same on one CBDrelax (also from Paradise).

 

[Zeta Reticuli]

Thats nothing,just grow on.

 

[zaprjaques]

that might sound stupid but maybe its close to the wall of the tent or something?

 

[Creeperpark]

Overwatering. The most prevalent cause of bent cannabis leaves is overwatering.

 

[mudballs]

Looks like a leftover from an overwatering event.

 

[goingrey]

I think overwatering would be all the fingers not just one?

It is being watered 24/7 though, it's a hydro system. Sorry if that wasn't clear from the photo. Water is circulating constantly (not on a timer), so should have ample oxygen too.

And nope not hitting the wall either @zaprjaques.

Thats nothing,just grow on.

Yeah I'm not too worried about it. But it is something, not nothing, and would like to know what.

 

[goingrey]

Could it be caused by physical (mechanical) damage to a root from either me moving the plant or the flow of water in the system?

 

[mudballs]

Could it be caused by physical (mechanical) damage to a root from either me moving the plant or the flow of water in the system?

Yes, do any roots look brown? I've seen reservoirs go bad and start killing roots. Lack of sufficient oxygen can force an overwatering symptom in hydro

 

[Prs2xs]

I grow in dirt- if I start to see that happening, I let it dry out before watering again. With hydro, maybe set the timer so there is a period of no water flow ( maybe 1/2 hr every 2 hrs) and see if it improves!
JMHO!

 

[goingrey]

Yes, do any roots look brown? I've seen reservoirs go bad and start killing roots. Lack of sufficient oxygen can force an overwatering symptom in hydro

There are some brownish blotches but I think it is from the nutes and/or LECA dust not lack of oxygen as it wipes off and doesn't smell bad. Could be the reason though.

 

[goingrey]

I grow in dirt- if I start to see that happening, I let it dry out before watering again. With hydro, maybe set the timer so there is a period of no water flow ( maybe 1/2 hr every 2 hrs) and see if it improves!
JMHO!

Hmm I'd need to buy a timer then. But maybe I'll try it.

 

[mudballs]

There are some brownish blotches but I think it is from the nutes and/or LECA dust not lack of oxygen as it wipes off and doesn't smell bad. Could be the reason though.

That's bacteria, robbing roots of nutes, water, and oxygen

 

[goingrey]

That's bacteria, robbing roots of nutes, water, and oxygen

The brown was kind of in the middle so I didn't want to trim it all off and lose half of the roots. So just wiped off the brown for now. At least some of it was clearly just LECA dust though, but maybe not all. Will wait and see how she responds before attempting the same on any of the other plants.

 

[Creeperpark]

If you lower the EC the curl should straighten out. What causes leaf curl is an imbalance of salts between the plant and the substrate. Water always follows salt and never the other way. If you have more salts in the substrate than in the plant the substrate will suck the water out of the plant. The more salt, the more suction the less salt the less suction and less curl. Water always follows salt.

Due to osmosis, water naturally moves from an area containing less salt to an area containing more salt. The more salt that accumulates in the soil from irrigation and natural occurrence, the more energy that a plant must expend to draw water from the soil into its roots.

How does salt affect water uptake in plants?
The high salt concentration (lower osmotic potential) in the soil lowers the water potential (ψ) and makes it harder for plants to take up water. Continuous uptake of NaCl by the root system and delivery to the shoot with the transpiration stream builds up high concentrations of NaCl within leaf cells. googlApr 29, 2023

 

[goingrey]

If you lower the EC the curl should straighten out. What causes leaf curl is an imbalance of salts between the plant and the substrate. Water always follows salt and never the other way. If you have more salts in the substrate than in the plant the substrate will suck the water out of the plant. The more salt, the more suction the less salt the less suction and less curl. Water always follows salt.

Due to osmosis, water naturally moves from an area containing less salt to an area containing more salt. The more salt that accumulates in the soil from irrigation and natural occurrence, the more energy that a plant must expend to draw water from the soil into its roots.

How does salt affect water uptake in plants?
The high salt concentration (lower osmotic potential) in the soil lowers the water potential (ψ) and makes it harder for plants to take up water. Continuous uptake of NaCl by the root system and delivery to the shoot with the transpiration stream builds up high concentrations of NaCl within leaf cells. googlApr 29, 2023

Do you think 1.4 is too high? This is two days post flip 50:50 veg:bloom.

I don't have a whole lot of substrate, tiny rockwool cubes and a couple of pebbles in the net pots.

 

[whiteberrieS]

Like this:

View attachment 18987430

EC is 1.4, pH is 6.2 (I have been letting it rise to about 6.5 and then adjusting it down to about 5.5). RH is pretty high, 60-70%. Strain is CBDenergy from Paradise but I see the same on one CBDrelax (also from Paradise).

Is GG4 in it's background?

 

[goingrey]

Is GG4 in it's background?

Unfortunately Paradise doesn't tell much about the genetics, or well anything..

 

[whiteberrieS]

Paradise is solid.. White Berry gave me my name whiteberrieS

 

[whiteberrieS]

Unfortunately Paradise doesn't tell much about the genetics, or well anything..

Just don't worry about a lil leaf curl

 

[xtsho]

That's my middle finger when someone cuts me off in traffic.