8 weeks from seed and yellowing at the bottom!

[chucklebrother]

Hey peeps

Having some issues with my autopot grow that I'm not sure how to fix given all the plants are on the same feed/EC I have 4 watermelon zkittles that have vegged out fine but now I'm having flowering problems, the lower leaves on 3 of them are yellowing rapidly and googling the problem it could be a number of things. Any ideas?

 

[Fallguy111]

I’ve only used soil. It looks underfed.

 

[chucklebrother]

I’ve only used soil. It looks underfed.

They're in soil (canna terra pro) I thought that too, that it was underfed but I have one of the same strain right next to it that doesn't have this problem.... I'm starting to regret buying this autopot system, I had less problems growing photos in them than I do autos

 

[Fallguy111]

I’d personally up or keep feeding. I try to keep my tips just burnt. But it is better to underfeed then over feed.

 

[SofaKingHigh_]

They look hungry, unless they are all clones from 1 plant you will get variations. Other than like a bx or something that’s been worked for a long time

 

[DeadHeadX]

I’d remove some of that lower stuff, yellow or not.

 

[DanKiller]

Different plants have different requirements,
Looks like a N def, but you are also close to overfeeding by the looks of it.
Try to raise the N in your feeding but lower total ec when you water.

 

[ooof-da]

I’m no expert but that looks to me like the plant is just shedding what she can’t use anymore. Like defoliating herself a little on the bottom where the energy isn’t worth the fight anymore. I’d be way more concerned if that issue comes up the plant.

 

[gooshpoo]

Immobile nutrients check your PH ensure it in the correct range 5.8-7.
If the PH is in range then it looks like Nitrogen deficiency or possibly Iron deficiency.

 

[Stiickygreen]

I dunno...looks like a plant in flower sending it's energy to the tops and discarding the OLDEST fan leaves...ala a natural process, IMO.

I wouldn't do shit. your plants look great. Just pluck any yellow off and roll.....

 

[amneziaHaze]

Some leafs look like a mg deficit google it
If i could guess you are using a strong led lamp

 

[MissinThe90’sStrains]

What have you been feeding? It looks like a lack of nitrogen issue (a-chlorotic/fading leaves starting from bottom and working up) and also magnesium (the patterning). Plants still need nitrogen through the first few weeks of flower - for that last push of growth in stretch. A lot of feed regiments completely cut it out right at transition, which has always given me issues when I was using bottled feeds - leading to starving plants that start to eat themselves in week 5/6.

Unless you’ve locked out from high ppm feed (in that case, flush and re-feed with a balanced NPK feed at about 1/2 strength), I’d feed more - like half veg and half bloom nutes combined.

 

[pegboy]

Looks like low Nitrogen to me but also showing signs of nute burn. Had a friend with the same auto pots and he had problems with salt build up. Not sure what the fix would be.

 

[Lou66]

I dunno...looks like a plant in flower sending it's energy to the tops and discarding the OLDEST fan leaves...ala a natural process, IMO.

I wouldn't do shit. your plants look great. Just pluck any yellow off and roll.....

Healthy plants don't shed leafs like that. That is a classic symptom of nitrogen deficiency where it is translocated from the lower leafs to the growing tips.
If enough nitrogen was available it would not sacrifice the leafs.