What's this?

[PharmaZ]

Hi guys,

Back again for your helpful advice!
Could you please offer a thought on what you would possibly do in this situation.

Temp
- Temps are a little high sometimes 30>
Light
LED Mars 48 small grow cab
The light is a little close only way to
Ph Ok
Nutes
GH bloom, Micro, and botanic are CalMag
Soil
RH 50-60
I have a plant in soil that just stopped growing bud. It was a slow starter took 10 days 12/12 to get it flowering after a few days bud started growing fine no leaves yellowing everything good.

The buds grew nicley, and over about 7-14 days things were great, the buds started forming THC. But that has now all stopped.
I fed when the plant was dry every 3 days with enough water for a little run off and I poured it in nice and slow so it soaked in for no dry patches. After flower started I fed 6ml bloom 1ml CalMag 2-3ml micro.

Now, after a week I've lost a large amount of leaves from underneath the canopy and it's only a small plant.
I feel the buds have just stopped growing, the top colas are ok about the size of a bic lighter. This is over 4 weeks into 12/12 (about 20 days of actually bloom)
Smaller buds 3 - 4 nodes from the top down have only a few calyxs growing they are tiny, they're just not growing...
Up top the fan leaves have red petioles and the leaves directly under the light are lighter in Colour as you will see in pics.
Note: The fans yellowed and died down low I did not take them,

I hope the LED glow in the background isn't too off-putting for your judgment. I can take photos again.

Thanks in advance

 

[Scar17]

I'm not sure but I can say the buds look nice!

 

[Micron Creek]

Your lady looks like its cannibalizing so it can make flowers. Does the individual recieve adequate light to the leaves that are dying off? The leaves at the canopy are still standing up and pistils still white and multiplying. I am not sure what Nitrogen content your nutrients have.​

 

[Heavily Medicated]

She is no doubt starving to death for some reason or another. Either your soil is lacking in nutrients, or your soil is in pH lockout. You have to get a reading on your soil pH in order to proceed. If your pH has you in lockout, adding more nutes will just make things worse fast. If you have a good soil pH probe, like an Accurate 8, other than that, you can get a general idea using the runoff method outlined in the stickies at the Infirmary. What brand or mix is your soil? Have you been pHing all of your inputs and if so to what level?

 

[Waira]

,... that fan is mostly showing N defc., some of which is normal at this stage,.. but there's P defc. starting I think, and the stall-out on budding smacks of a in-pot pH problem, very likely too acidic, which will lock-out P,... overall paleness is part P defc. too, maybe S as well,... some epsoms salts (MgSO4) via foliar can help with that,... but as HM says, the pot pH is key here,... the run-off method is dubious for accuracy in general, but the improved method/calculation in that sticky article (highlighted section above this one) will at least get a ballpark estimate,... and if results show it's too acidic, you'll have to flush the pot anyway,.....