Any opinions on what def this could be?

[Jim_H]

I'm guessing this is a magnesium deficiency but I'm not quite sure. This is my first run in several years

Triks auto by twenty20 Mendocino
3 gallon fabric pot with coco.
Feeding 50ml of canna a+b and 15ml of calmag per 5 gallons of tap water(tap is 100ppm that I let aerate for days before mixing)
Always ph to 5.8
Temps in the mid 70s lights on and humidity low 60s.

 

[blue]

It's possibly a potassium def, but i wouldnt sweat it too much, looks like you're well into flower.
I often see funkyness at the end of a grow!

Good luck with the rest of flowering

 

[Entombed]

If you think it's Mg, instead of adding more calmag, try a pinch of epsom salt. Plain non-scented. It's pure Sulfur and Mag. 1-2g/gallon gives a nice little boost without messing up your main NPK nutes. Sulfur helps plants produce strong scents, smells, flavors.

 

[Jim_H]

It's possibly a potassium def, but i wouldnt sweat it too much, looks like you're well into flower.
I often see funkyness at the end of a grow!

Good luck with the rest of flowering

Sounds good. I think this will be week 5 of flowering and am going to give it some p/k.

 

[Jim_H]

If you think it's Mg, instead of adding more calmag, try a pinch of epsom salt. Plain non-scented. It's pure Sulfur and Mag. 1-2g/gallon gives a nice little boost without messing up your main NPK nutes. Sulfur helps plants produce strong scents, smells, flavors.

Will add that to my list! are you also in coco? I'm looking to switch from the canna a and b.

 

[Lil Dab]

Looks like too much N locking out K it starts at the tips and teeth and the center of your leaves are really dark green too

 

[Entombed]

Will add that to my list! are you also in coco? I'm looking to switch from the canna a and b.

Yep coco as well. I'm looking at changing nute lines myself. I've only been using Megacrop 1-part with epsom salt. It's gone decently but it's time for something a little more adjustable.

That canna line is supposed to be really good. I've seen a few other guys running it here.

 

[Jim_H]

Looks like too much N locking out K it starts at the tips and teeth and the center of your leaves are really dark green too

After feeding this morning and reading my run off ppms I agree. I'm gonna flush with plain ph'd water before I add anything new and try to get these ladies in check.

 

[Jim_H]

Yep coco as well. I'm looking at changing nute lines myself. I've only been using Megacrop 1-part with epsom salt. It's gone decently but it's time for something a little more adjustable.

That canna line is supposed to be really good. I've seen a few other guys running it here.

It hasn't been bad, Ive just struggled with these ladies this entire grow it seems like. The last time I grew it was 2016, and all I used was floranova bloom in coco and never had any issues.

 

[JP1]

After feeding this morning and reading my run off ppms I agree. I'm gonna flush with plain ph'd water before I add anything new and try to get these ladies in check.

Never flush with plain water. It'll strip all the calcium out of your coco. If your starting water is 100ppm you should need very little calmag. I'd drop the calmag to 1ml/gal and keep running the same a+b, and flush with that