HYDRO Yellow leaves

[nzic]

What is this? Older leaves turning yellow and plants looks droopy. pH was 6.5

[GanjaGed]

Are you in late flower?

Those would look pretty normal imo if so

[nzic]

I'm 3 weeks in veg.

[GanjaGed]

Could be Nitrogen Def. What nutes and strength?

[GanjaGed]

And how's your PH?

[GanjaGed]

You said 6.5, are you keeping it there or letting it fluctuate?

6.5 is at the high end so you might want to bring that down a bit.

[GanjaGed]

lol actually...

What do you mean by "Hydro"? are you running coco, or something like a DWC?

[nzic]

I running DWC. GH Flora trio nutes. Grow 2.5 ml, micro 2.5 ml, bloom 2.5 ml/gal PH is fluctuate.

[GanjaGed]

No CalMag? Might be a Calcium def.

I think it's either Nitrogen def. or Cal def. If you're running filtered water I'd look at CalMag first.

Hopefully someone a bit better at this will be along

See if you can put up a pic of the plant. That will help.

[ellz]

To me, it looks like a magnesium deficiency: http://www.growweedeasy.com/magnesiu...iency-cannabis

Magnesium Deficiency:
Problem: A light green or yellow coloring will begin to show on the veins and edges of the lower & older leaves - this is one of the classic signs of cannabis magnesium deficiency.

[nzic]

If I use tap water 150ppm do I need to add calmag?

[ellz]

I use it and I run tap water that ranges from 80-100ppm. The plants seem to like when I use it. I use the max dose of it and it works great! You could probably get away with only adding a teaspoon (5mL) per 5/gallons of water.

[nzic]

I will try it. Thanks