3 wk old unhealthy looking and dying older leaf tips

[Chester da Horse]

Hello RIU

My star performer out of a batch of four (G2) is showing some greying/death on the tips of older leaves. Your input would be greatly appreciated.



Also, could you tell me WTF is wrong with G4? it just looks depressed and is growing much slower than the others.


Details below, I have a very long winded journal with specifics (linked in signature);
20 days from seed (Ganesh, from Mandala seeds)
50% perlite/50% vermiculite
pH in always 6.0-6.5
Nutes: ~EC1.0 NPK 5:1:5 with 1mL of 50%H2O2/5L
Canopy temps: 25-28C
RH 55-60%
Light: 400W MH at 11" (dropped from 14" slowly, duration reduced from 20/4 to 18/6 in last week)
Last watered on day of transplant 4.5 days ago, up potted from 1L to 5.6L pot (G2) and 15L fabric bag (G4)
Moisture is present 1-2" deep, and probably still saturated lower down
Gentle LST has been performed in the last 48hrs (without bondage)

[G4 has been a test subject for GH Rapidstart (recommended dosage twice - at day 4 and on transplant)]

Thanks in advance, hope to isolate the cause and rectify before things get worse

 

[deadgro]

Stress from transplanting and pH fluctuations associated with it. They look healthy overall, I wouldn't worry unless it spreads.

 

[Bud Tipps]

The medium is too moist. Use less verm next time you mix your medium.

 

[Chester da Horse]

@Deadgrow - Thanks for the reassurance deadbro, I guess I'm just an overly concerned parent, but I can see them starting down a dark path and I want them back on the straight and narrow.

The medium is too moist. Use less verm next time you mix your medium.

Yeah ur probly right eh? its worse now I'm in these big pots, they will take ages to dry out. My hydro shop guy sells this premixed by the 20L bag and told me to use it. I thought it would be good for my first grow.

Do you have any tips for how to water small plants in big pots?

 

[Diabolical666]

Just signs of overwatering, hence the slowed growth

 

[Chester da Horse]

So I'll let the pots dry out significantly before the next watering... I did soak the media prior to planting, but now I've let the top 2 inches get bone dry and its been 4.5 days since they got any water.

How do I water them properly in the future? Small amounts near the root zone? or wait longer and water the whole pot surface?

Thanks for the prompt input guys, much appreciated.

 

[Terry385]

pot size to big for such a small plant watch how you water them i water just a little more often

 

[Chester da Horse]

pot size to big for such a small plant watch how you water them i water just a little more often

sweet.

Yeah I jumped the gun on the transplant thing. I saw roots in the drain holes and panicked. Try to make the most of it - I'll let them dry, then water a little amount (say 250-300mL which is what they would use in 3 days)

You guys all rock. May the bud karma be strong for you.

 

[Chester da Horse]

I thought I'd post a set of progress pictures incase another noob find this thread looking for answers

This is 5 days after said overwatering, things are still getting worse.


I have done nothing but watch them, and turn up my dehumidifier.

[soaked over watered OVERWATERED wet yellow droopy leaves grey leaf tips help]

 

[Chester da Horse]

Anyone think this could be being made worse because I have too much potassium in my nutes? The damage is progressing to the 3rd leaf sets, but is staying at the tips of the serrations and not moving inwards on the leaf

 

[Louisville]

Definitely looks like its staying wet/over watering.

 

[Louisville]

Also showing signs that its not getting the potassium it needs-for whatever reason. How's the temps?

 

[Louisville]

What's the humidity in the room? Sry if I missed this already....

 

[Chester da Horse]

@Louisville
Yep the consensus was overwatering. I've now let it dry out for 6 days, but the leaf changes are still getting worse. The perlite/verm mix is dry to touch on the surface and moisture is felt about 1" down but its no longer soggy as far as my stubby fingers can reach.

Humidity is controlled 45-60% with a dehumidifier and there is adequate air exchange. Temps are 23C night to 28C at canopy under lights.

I am more worried about high potassium in my feed (5-1-5) rather than deficiency - what are the signs ur seeing? Do you think i've caused a lockout somehow? I've haven't pushed the EC higher than 1.0 yet so I don't think there could be a salt buildup of any significance.

Thank you for dropping in and adding your ideas - I'll take all comers...

 

[bamboofarmer]

@Louisville
Yep the consensus was overwatering. I've now let it dry out for 6 days, but the leaf changes are still getting worse. The perlite/verm mix is dry to touch on the surface and moisture is felt about 1" down but its no longer soggy as far as my stubby fingers can reach.

Humidity is controlled 45-60% with a dehumidifier and there is adequate air exchange. Temps are 23C night to 28C at canopy under lights.

I am more worried about high potassium in my feed (5-1-5) rather than deficiency - what are the signs ur seeing? Do you think i've caused a lockout somehow? I've haven't pushed the EC higher than 1.0 yet so I don't think there could be a salt buildup of any significance.

Thank you for dropping in and adding your ideas - I'll take all comers...

I'm no expert, but here's my two pennies.
You say you're feeding 5-1-5? Sounds like a low Phosphorous number. I give my plants min. 6-4-4 during veg. I grow in soil so things are probably different, but either way you might want to go 3-2-3 for a minute to give those plants time to adjust to the transplant and photo-period adjustment.

You say your ph in is 6 - 6.5. What is your run-off?

 

[whitebb2727]

I thought I'd post a set of progress pictures incase another noob find this thread looking for answers

This is 5 days after said overwatering, things are still getting worse.
View attachment 3367721 View attachment 3367722

I have done nothing but watch them, and turn up my dehumidifier.

[soaked over watered OVERWATERED wet yellow droopy leaves grey leaf tips help]

I wouldn't worry about the nutes ratio. Its just the moisture. It can take a long time for large pots with small plants to dry. Also when you transplanted the lower leaves are close to the medium which can aggravate the situation.

Your making a mountain out of a mole hill. Just let it dry more. Dryness will encourage root growth.

Honestly they don't look that bad. Just don't freak. Definitely don't try to trow more nutes at it.

Over analyzing will make things worse.

 

[Chester da Horse]

Sounds like a low Phosphorous number. ... you might want to go 3-2-3 for a minute to give those plants time to adjust to the transplant and photo-period adjustment. You say your ph in is 6 - 6.5. What is your run-off?

Hi bamboofarmer
-I agree totally, I bought some 1-9-1 liquid guano which I will be adding in increasing amounts to subsequent feeds and boosting with it throughout flower, its going to be a few more days yet before I can givem anything.
-my runoff: I only tested once before transplanting, and it was pH 6.2. I don't think I will be able to water to runoff for a while, at risk of drowning these babies!
PS: do you grow bamboo? I'm getting ready to plant himalayan blue weeping, and temple bamboo out in the yard (in stainless steel tanks, not in the ground)

I wouldn't worry about the nutes ratio. Its just the moisture. It can take a long time for large pots with small plants to dry. Also when you transplanted the lower leaves are close to the medium which can aggravate the situation.

Your making a mountain out of a mole hill. Just let it dry more. Dryness will encourage root growth.

Honestly they don't look that bad. Just don't freak. Definitely don't try to trow more nutes at it.

Over analyzing will make things worse.

Thanks, I'm gonna print this out and put it on my grow cave door

 

[bamboofarmer]

Hi bamboofarmer
-I agree totally, I bought some 1-9-1 liquid guano which I will be adding in increasing amounts to subsequent feeds and boosting with it throughout flower, its going to be a few more days yet before I can givem anything.
-my runoff: I only tested once before transplanting, and it was pH 6.2. I don't think I will be able to water to runoff for a while, at risk of drowning these babies!
PS: do you grow bamboo? I'm getting ready to plant himalayan blue weeping, and temple bamboo out in the yard (in stainless steel tanks, not in the ground.

Good point about not be able to check runoff. As for the bamboo question, no I don't grow bamboo. I've tried growing Moso and a few other varieties, but in zone 6a, they don't didn't make it more than a couple years. I actually had an agent come to my house several times trying to confiscate the bamboo seeds I had ordered. (scary stuff)