Mid to late flowering problem.

[dime_slayer]

3rd grow and every time I get similar issues towards late flowering. I've tried different soils and nutes on each grow.
Currently I'm following the build a soil classic protocol. build a soil 3.0, worms, clover cover crop, straw, build a flower and craft blend. been giving just water and some cal/mag. Currently week 6 of flower with barney's lemon drizzle. Vpd 1.3, ppfd 900, water about a 1.5 gal every other day. In the last 8 days things went from hell yes to I'm screwed. build a soil claims using this protocol there no need to test ph or add anything else

I still think I'm running into a potasium deficiency and plan to find some potash today.

 

[Grownsince95]

Potassium uptake can be blocked by excess calcium. What's the ppm of your tap water?

 

[dime_slayer]

Potassium uptake can be blocked by excess calcium. What's the ppm of your tap water?

My water is not consistent, but 22-100ppm

 

[Grownsince95]

Yeah that's pretty good. If it were my grow I would cut back before I added more anything. How often are you watering?
In my experience a true potassium deficiency would start from the bottom of the plant and move up. Top of the plant issues are immovable nutes like calcium, light burn or pests usually.

 

[mstrpkl]

Bro the first thing i would personally do is rip out every single green plant in the pot that isnt your cannabis plant. Destroy. Kill. End them. Theyre stealing water and nutrients from your plant. Maybe not enough to make this happen, but could be making the problem worse. Im not sure what kind of nutrient uptake those little clovers have