Deficiency? Lockout? week 10

[cannabro_]

Problem: Yellowing whole plant. Late flower. Burnt tips

Medium/grow method: Happy Frog only

Feed: and supplements used: Trio

water source: Tap

Strain/age:ethos purple thai 10 weeks

light used: HLG 600rspec

Climate:75°-78° day 70°-73° night

Additional info: PH water at 6.0. Runoff is 6.5. I tested ppm and it was 1100 but the tap water is high. Im switching everything next grow just trying to finish this one. Any help appreciated!

 

[Bruce Campbell]

Have you given any cal-mag during the grow?

Overall, it doesn't look bad for being this close to harvest. I would probably not even bother changing anything at this point...

If I had to guess, I would say it looks like low Mg.

Pretty sure the trio has no Ca, but some Mg. The Ca in the tap water and the HF could have gotten you this far (especially if you're using 5gal or larger pots). If it is low Mg, some epsom salts would help.

 

[MIAutomatic]

It’s possible that you need calmag, but I think that’s an issue with that is often over diagnosed. Most tap water has enough calmag, sometimes too much if you are on well water or small neighborhood systems

I know you were trying to photograph the problem areas, but a picture of the whole plant would be easier to diagnose. Slight over feed, slight under feeding, and calmag deficiency can all look similar, but based on your PPM, red stems and stretchy growth I I think you may have been boarder line over feeding them the whole grow. Just enough to cause lockout, but not enough to burn the leaves. You appear to still be 3-4 weeks from harvest and still a lot of bud weight to develop, so I do think it’s worth trouble shooting.

It’s usually a good idea to add some extra drainage to happy frog, it can hold too much water on its own and lead to overwatering, which can also cause slow stretchy growth and lockout.

How often are you feeding and watering?