Leaf damange /chlorosis

[BknBits]

Hey guys, I've been noticing the bottom most set of leaves on my baby slowly yellowing for a couple of days. This morning I noticed the leaves aren't doing too well at all and appear to be dying around the edges of the leaf. These poor leaves were already shaped funny from high heat in the first few days I think. Looks like there is a tiny bit of yellowing and just a tiny piece of what appears to be dead leaf on the next node up. After doing some looking around here my best guess is nitrogen deficiency / potassium deficiency. But that really doesn't make a lot of sense as they've been getting nutes for a good week and a half now. So I'm leaning towards PH issues. I've been feeding at a pH of 6.5 for the last couple feeds, most recent feed was a couple of days ago. The leaves in question had started yellowing then but no dead spots.

I should also mention that for the first 10 days or so I wasn't able to PH my water and I know it comes out at 7.5 after getting my pH pen. Think my soil pH might be off? Is it something else entirely?

Any advice/suggestion is appreciated. Thanks!

 

[Renaissance Redneck]

How are the other leaves looking, Bkn?
How old is she, and what's your soil mix?

 

[GCase]

Bkn

The first set of true leaves normally end up taking a beating. So close to medium can get nute splash. Looks like a burn to me. First leaves are sensitive.

What one can do is just trim necrotic edges. Any leaf can be cut and still be useful--plus plant looks better. The first leaves just support initial growth and one could just remove at this point or just let them naturally fade away.

It appears upper canopy is aok, given--no photo included.

Cheers

 

[BknBits]

Whoops! Was in a hurry and left out some important information.

Lights: 125 cfl 6500k for veg, 20/4 cycle. Currently about 3'' from plant.
Medium: just plain potting soil from Lowes. No ferts, just soil. Since it is such a small container I didn't bother putting anything in for drainage or there would be no soil Cut holes in the bottom for drainage. Seems to dry out fine.
It's in a tiny tupperware container. Started it rather impatiently and didn't have a good pot at the time. I guess the test will be if i can keep it alive!
Currently it is 20 days old. Looks like something is about to happen flowering wise. Didn't get that in the other picture I took for today but at least you can see the top. lol

Also, I should note that it has not spread any farther all day.I'm Hoping GCase is right. Makes me worry less LOL.


What do you guys think about the next watering? Should I back off nutes a bit or is this likely to be a problem again? currently using 1/4ml per gal of Humboldt Nutrients Master A&B, Structural Integrity additive, and Equilibrium for cal/mag.

I definitely don't want to burn her up after making it this far.

 

[GCase]

Looking real good!

PHing will be a tremendous tool to stop--burn and keep nutes available. Soil = 5.8 at lowest end to 6.5 at high end.

Cannabis is so very sensitive. The paradox is that in the end it is the health of flowers that count and they will grow anywhere under almost any condition (excepting the obvious--95+heat or freezing).

Only those with perfect environments and one heck of a green thumb avoid cosmetic issues. Your plant has just had a bit of a rough spot and looks like you say---pre-flowering time.

Only way to get there is to gain experience--takes time. Plus that seems to be the best way to learn--doing and testing your diagnostic skills.

In regard to feeding--1/4 dose working up is not a bad deal.

One thing I can share with you is the PHing method big time grower Rosenthal uses:

1. Use either good tap water and PH or RO water with one teaspoon either cal/mg or epsom and PH.

2. Add nutes and re-ph. This insures a buffer to keep PH in the zone. It takes soil time to adjust.

Personally, I think a flush is a bit too much for your plant is in good condition.

Cheers

 

[BknBits]

Looking real good!

PHing will be a tremendous tool to stop--burn and keep nutes available. Soil = 5.8 at lowest end to 6.5 at high end.

Cannabis is so very sensitive. The paradox is that in the end it is the health of flowers that count and they will grow anywhere under almost any condition (excepting the obvious--95+heat or freezing).

Only those with perfect environments and one heck of a green thumb avoid cosmetic issues. Your plant has just had a bit of a rough spot and looks like you say---pre-flowering time.

Only way to get there is to gain experience--takes time. Plus that seems to be the best way to learn--doing and testing your diagnostic skills.

In regard to feeding--1/4 dose working up is not a bad deal.

One thing I can share with you is the PHing method big time grower Rosenthal uses:

1. Use either good tap water and PH or RO water with one teaspoon either cal/mg or epsom and PH.

2. Add nutes and re-ph. This insures a buffer to keep PH in the zone. It takes soil time to adjust.

Personally, I think a flush is a bit too much for your plant is in good condition.

Cheers

Awesome. I'm glad to know someone else thinks it looks okay..The top leaves are such a pretty green it's almost mesmerizing. I've been around and helped other growers with their stuff and got to do some of the things hands on, but like you said there's nothing like doing things yourself. I'm rather obsessed with this girl at the moment.

:smoking:

Alright, i'll give that PH method a try. Going to try the runoff method as I don't have a proper soil PH pen. Going to get that done before I do any more feedings and go from there. She'll be awake in two hours. Not sure if the soil is dry enough for another watering yet so I may have to wait another day.

 

[Renaissance Redneck]

Awesome. I'm glad to know someone else thinks it looks okay..The top leaves are such a pretty green it's almost mesmerizing. I've been around and helped other growers with their stuff and got to do some of the things hands on, but like you said there's nothing like doing things yourself. I'm rather obsessed with this girl at the moment.

Obsessed? Ain't we all!
GCase is the man, Bkn. Just checking, is that tupperware container clear, or colored? Exposure to light will not make your roots happy at all.

 

[BknBits]

Obsessed? Ain't we all!
GCase is the man, Bkn. Just checking, is that tupperware container clear, or colored? Exposure to light will not make your roots happy at all.

It is indeed clear. I did not know that about the roots! Thank you for that information...I'll see about wrapping the container in duct tape, except for the bottom obviously. Though I may be out of duct tape. Wellll I'm gonna go fix that now

 

[GCase]

Thanks RR. All looking good.

Cheers

 

[Renaissance Redneck]

Though I may be out of duct tape. Wellll I'm gonna go fix that now

Redneck lesson #1, never ever run out of duct tape!!! I'd personally (being unstable and a bit deranged) tape the bottom as well, if it's possible, and re-poke your drainage holes.
Up top, light good.
Down low, light not good.