Hard time with some of my plants, have pics

Hey ya'll,

I am having a problem with a few of my plants, particularly my Kush strain. Some yellowing occurred between the veins and have since supplemented with CalMag+ and it has just gotten worse! I initially flushed and fed with Botanicare Base and Grow (was not using this prior). My pH is at 6.7-6.8. I am prepared to pH down the water if need be, but just want to be sure it is the right thing to do...

Here are some pics:



I would greatly appreciate any help!

What are the temps and how close is your light? And what kind of wattage of MH you got?

Magnesium Deficiency, 100%
Hit it with some Cal/Mag.
Also, a handy chart for future reference.
View attachment 2811682

Thanks for the quick response! The temps are from 62-74 F. I am using HydroFarm 8 bulb T5 fixtures at 432w per fixture. Each fixture covers about a 3x5 foot area. They are about a foot away from the canopy, which never gets above 74F. I have plenty more lighting available (1000w MH and 5 1000w HPS), but don't feel that it requires any at this point. I will be putting in a vertical cool tube with two 1000w HPS at the end of the week when my 220 timer comes in.

HeadieNugz said:

Magnesium Deficiency, 100%
Hit it with some Cal/Mag.
Also, a handy chart for future reference.
View attachment 2811682

Click to expand...

Yes, as I mentioned in my post, I have been supplementing with CalMag+ and it has gotten substantially worse! I even foliar (sp?) fed it with a light mix.

Ogracious said:

Thanks for the quick response! The temps are from 62-74 F. I am using HydroFarm 8 bulb T5 fixtures at 432w per fixture. Each fixture covers about a 3x5 foot area. They are about a foot away from the canopy, which never gets above 74F. I have plenty more lighting available (1000w MH and 5 1000w HPS), but don't feel that it requires any at this point. I will be putting in a vertical cool tube with two 1000w HPS at the end of the week when my 220 timer comes in.

Click to expand...

Holy shit... anyways have you ever flowered with that T5?
And why does the picture have that wave.. I thought only MH's did those.

Nice Ol Bud said:

Holy shit... anyways have you ever flowered with that T5?
And why does the picture have that wave.. I thought only MH's did those.

Click to expand...

I have never flowered with the T5's, but I will be supplementing my HPS with them this cycle. The frequency of the fluorescents does not agree with my iPhone apparently.

Also, I was curious if it was a good idea to pH a reservoir with about a months worth of water or if I should pH as I use it?

Hmmm... How hot do those t5's get?

They don't seem to effect the temperature in the room they are in, I don't even have my exhaust fan going (room is vented and passively cycles the air with the oscillating fans).

Aha! I think I figured out the issue! I had moved to a bigger grow room on another part of my property a couple weeks ago and the spigot I was getting my water from was a different pH than this one. This is due to the fact that it is a direct line from the well vs going through a water softener and filter. I will let you guys know if this fixes my issue!

Wish me luck...

Edit: The new water was actually at 5.0 pH!!!!!