Leaf yellowing in week 4 of Veg

[PotWWD]

Hello everyone,

I noticed recently that my lower leaves were yellowing. This started more around the veins of the leaves but eventually they fully yellowed and died. I initially thought it could be lack of light given they were on the lower leaves but it seems to have moved up to the middle now. There isn't a ton of leaves doing this but I want to get ahead of it.

Any thoughts on this and my uploaded pic?

Info:
Strain: Cali Kush Feminized / Photoperiod
Week 4-5 of veg
Water PH: 5.6 - 5.7
Fertilizer:
1. Using Big Bloom and Grow Big every other week. So far 2 rounds to this point. BB 6tsp / gallon, GB 3tsp / gallon
2. One round of Cal Mag so far @ 1.5tsp / gallon

Thanks!

 

[Gingerbeard]

Can you show your whole plant? What is your medium?

 

[OldManGrower]

What are you growing in? Your PH is far too low for soil or coco. Bring your PH up to 6.4. The picture is very indicative of PH problems.

 

[Bluey]

Fix your pH. It is way too low and it will lock out the calmag. I'd also give it a 6.4 next feed with a half calmag suppliment.

Edit. In coco not below 5.8 in veg or 6 in flower. They are the lows typically. Not above 6.5. In soil 6.5 to 6.8 I think is typical. Get a good pH meter.

 

[PotWWD]

Thanks for the quick response all. This is a new strain to me so I was wondering if PH might be the case.

Should I proactively prune off these yellowing leaves or will this cause even more stress?

Gingerbeard see additional pic as requested. Also, per your question, I am using FoxFarm Ocean Forest Potting Soil.​

 

[Bluey]

It won't hurt to leave the leaves I wouldn't think. I think these plants produce lesser outcomes the more you stress them, especially if in flower.

 

[Gingerbeard]

What he said all over the place. Removing them means you won't have to worry about them. But you can't tell your plants are in trouble without them. What?
FFOF is full of what you need for vegging. All you need to worry about is keeping your pH good.