help with Magnesium and Zinc deficiencies (pics).

I've got a plant that appears to have zinc deficiency but I'm not sure. The inner portion of the leaves are very light green, occuring on the small developing leaves at new growth areas. Also appears to be a Mg deficiency as some of the larger fan leaves are light green on the outer edge of the leaves with some brown spots showing.

I squeezed out some water from the soil and the ph solution turns orange indicating the PH is around 5-5.5. If PH was the problem it seems like I would be experiencing nitrogen problems before a zinc problem showed up.

I watered yesterday, so I'm not sure whether re-watering with some PH up would be a good idea or not, nor do I know how much PH up to add. Any advice is would be appreciated.

Update, talking to some locals it was suggested that rather than do a PH adjustment I do a water flush, using 3x the volume of the pots over an hour period.

Also suggested heat issues could cause the defficiencys, but I'm using HO-T5s and have a pretty good ventalation system.

Anyways, I haven't done anything yet. If anyone has advice or recommendations they are appreciated.

Bump. I have some leaves doing the same thing as the second pic. Narrowed it down to what you've said. I have Mykos in there so I want to be sure I have to flush before I do it.

Rahz said:

I've got a plant that appears to have zinc deficiency but I'm not sure. The inner portion of the leaves are very light green, occuring on the small developing leaves at new growth areas. Also appears to be a Mg deficiency as some of the larger fan leaves are light green on the outer edge of the leaves with some brown spots showing.

I squeezed out some water from the soil and the ph solution turns orange indicating the PH is around 5-5.5. If PH was the problem it seems like I would be experiencing nitrogen problems before a zinc problem showed up.

I watered yesterday, so I'm not sure whether re-watering with some PH up would be a good idea or not, nor do I know how much PH up to add. Any advice is would be appreciated.

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Yes, PH is low, but that low, N and K would be pretty much all you are picking up.
No P, calcium or Mag.
That doesn't look like zinc def.
Why don't you tell us if you've fed, what, and how often, and age of plant.
Also give us some pics of the whole plant.

It was the first fertilizer application after transfering to the large pot, week 3 hydroponic nutes (Holland Secret 3 part). Strain is Liberty Haze, I have a 2nd plant (Power Plant) in the same conditions that's doing fine/great. The Liberty Haze just seems to be real touchy about what it's fed. The plant is several months old and has only been fed 4 times due to this (it experienced nute burn at week 2 from week 1 hydro nutes). I did a flush and then fertilized with liquid seaweed and it recovered like a champ. It's been slowly going down hill since the 2nd hydro nute application. I will post up a whole plant pic later today when I have some time.

try some calmag IMO

Here is a whole plant picture. There appears to be some recovery though I haven't actually done anything to them yet. I mixed in a half gallon of worm castings added to the soil at the bottom of the pot, so perhaps the roots have reached that zone, or they were defficient and the last nutrient application was helpful rather than hurtful? Still, water PH @ 7 comes out @ 5, seems like it might be too acidic. Still not sure whether to flush or mix in a few drops of PH up the next watering.

(yes 2 plants, they were given to me that way and I couldn't seperate them).

As fas as the defficiencys, the top leaves were yellowing from the inside. The only pictures that seemed to indicate the same thing were zinc defficiencys, but it's just a newb guess on my part.