4 Week Old Planted Clones - Leaves dying, easily plucked off

[Tim213]

So I got two clones (Tangie and Blue Dream) from a pharmacy on 12/8. They had roots and were in peat pellets.

Anyways I transplanted them into two containers and although they've been growing, they are experiencing burnt/yellowing/dying leaves.

The past two days, when I touched a leaf that was dying, the entire stem just fell off without any force. I took a picture of the two leaves. these pictures were taken right when the leaves were plucked off, so no additional drying occured.

Both plants are exhibiting the same symptoms. the temps range from 70 (night) to 80 in the daytime when i have the lights on. 18/6 schedule. I'm just using a mars hydro 300watt, 2 cfls and a taotronics 36w led bulb.

I am going to say one issue i had was i used MG potting mix from the get go.

I checked the PH and it is at 7

I've watered with only reverse osmosis filtered water. When I water, I never watered enough for it to drain out. Was that an issue? I would usually only water about 2oz per plant. I would check the soil to see if it was moist about knuckle deep and if not, then I would water.

I mixed in some dr earth all purpose fertilizer last week thinking maybe nutrient deficiency since the ph was at 7.

then I decided to flush it 2 days ago. I ran about 84oz of water through each until the runoff was clear. no ppm meter here.

I thought maybe it was light burn from the led so I've raised it to a little over 18" over a week ago but no improvements either.

It hasn't gotten better or worse since then.

any ideas?

apologies for the led on photos...at work posting this now.

 

[Bernie420]

I've watered with only reverse osmosis filtered water. When I water, I never watered enough for it to drain out. Was that an issue?

YES
----------------------------------------------------------------------
Underfed over watered no ppm meter no microbes

go get some microbes and epsom salt Water in a pinch of the microbes and 1.5gr per gal. of epsom salt. Use pinch of the microbes every watering use the mag till it gets better then cut that in half every other watering.

 

[Kushash]

So I got two clones (Tangie and Blue Dream) from a pharmacy on 12/8. They had roots and were in peat pellets.

Anyways I transplanted them into two containers and although they've been growing, they are experiencing burnt/yellowing/dying leaves.

The past two days, when I touched a leaf that was dying, the entire stem just fell off without any force. I took a picture of the two leaves. these pictures were taken right when the leaves were plucked off, so no additional drying occured.

Both plants are exhibiting the same symptoms. the temps range from 70 (night) to 80 in the daytime when i have the lights on. 18/6 schedule. I'm just using a mars hydro 300watt, 2 cfls and a taotronics 36w led bulb.

I am going to say one issue i had was i used MG potting mix from the get go.

I checked the PH and it is at 7

I've watered with only reverse osmosis filtered water. When I water, I never watered enough for it to drain out. Was that an issue? I would usually only water about 2oz per plant. I would check the soil to see if it was moist about knuckle deep and if not, then I would water.

I mixed in some dr earth all purpose fertilizer last week thinking maybe nutrient deficiency since the ph was at 7.

then I decided to flush it 2 days ago. I ran about 84oz of water through each until the runoff was clear. no ppm meter here.

I thought maybe it was light burn from the led so I've raised it to a little over 18" over a week ago but no improvements either.

It hasn't gotten better or worse since then.

any ideas?

apologies for the led on photos...at work posting this now.

You watered with 2 oz of water? Is that correct? That would be two shot glasses of water.
What size pot?
How much fertilizer did you top dress with?
You didn't add anything else?
No other nutrients or bottled nutes?

Certain bags of MG can be used, it's the ones with extended feed that tend to be a problem when growing MJ especially when in flower.

 

[Tim213]

noted about microbes and epsom salt water. any reccos? like any raw micros on amazon will do?

yes i filled up about 4oz of water and split it between two plants. the cadence was about every 2-3 days depending on how dry the soil felt knuckle deep

the pots are about 6” in diameter. 2.7 quarts

top dressed with about 3/4 tablespoon of ferts. no other nutrients used.

the mg was my oversight... just lazy cause i had it on hand. i used the same kind a couple years ago to grow bagseed and worked out fine.

thanks everyone so far

 

[Bernie420]

noted about microbes and epsom salt water. any reccos? like any raw micros on amazon will do?

yes i filled up about 4oz of water and split it between two plants. the cadence was about every 2-3 days depending on how dry the soil felt knuckle deep

the pots are about 6” in diameter. 2.7 quarts

top dressed with about 3/4 tablespoon of ferts. no other nutrients used.

the mg was my oversight... just lazy cause i had it on hand. i used the same kind a couple years ago to grow bagseed and worked out fine.

thanks everyone so far

If your getting the Raw brand microbes get the bloom microbes for veg and bloom there isnt much difference between the two and no need to buy both.

any reccos? dont know what this is.

2oz of water for each plant doenst sound like much.

I dont think the cfl's are offering much being that far away down low. Myself I wouldn't use them here and I dont see the other little led light might want to get rid of that too.

 

[hotrodharley]

Feed them. They're clones from a grown plant that was using nutes.

Back off with the lights. Well off until a good root system is established.

 

[Blitz35]

Hard to see much with the colored lights, but one thing that's evident..you're watering 2 oz's per plant??? That's a quarter cup! That will wet the top half inch of your medium! Im surprised you don't have roots covering the top of your medium. Without water at the root level..nutrients can't travel through the plant..they will take it from the leaves instead, which what may be happening...as i see calcium missing, which is the first element that you lose when you don't water enough, magnesium missing and potassium. You say you added ferts because you figured the ph was too high and so it was deficient?... why add more food without correcting the ph first (quite pointless and harmful)...then you 'flushed' it all out 2 days later? I quote flush because 2.5L of water is not a flush unless you're growing in 1L pots. This plant may be a lost cause as the damage seems extensive, and all that burnt/necrotic damage will not fix itself. Next grow, make sure ph is correct first...ideally max 6.5 but better around 6.1-6.3 for these sphagnum based mixes. Feed when the plant shows it needs it, not because it's part of a 'regimen' and it 'must' be done. Also, if using RO water, you need to get a source of cal-mag..most of these retail store bought nutrients i see don't contain enough calcium and most have no magnesium/sulfur in it. With RO water, you must add calcium and magnesium to it.

 

[*BUDS]

Looks diseased, this link might help with some info.
https://www.royalqueenseeds.com/blog-leaf-septoria-yellow-leaf-spot-on-cannabis-plants-n678

 

[Tim213]

thanks for the tips everyone. took your advice and wanted to give update. repotted them on monday. snapped this pic right before the scheduled 18 hours of light. will aim to start flowering next week

i wish i started lst sooner but so far it’s working