Not sure whats going on! rep for you help

Haven't changed a thing the strain is ak-48 temp is around 82 but its in veg was going to be one of my mothers. Topped it because it was alot taller then the others took that as a clone then this started. So i transplanted it into a bigger pot two days ago figuring maybe it was root bound. Have been using nothing but water when it started a week ago and its going thru all the fan leaves have vegged every strain you can think and never had this problem. Vegging right next to it is a sharks breath, Cole train and two sour cream with all the same water,soil and they look amazing!! The ph of my water tops around 6.9 and the soil is just basic soil at the hydro store called Just Bcuse.

Hey,

Looks like a slight nitrogen defficiency. Give it a good watering with warm water, use more water than you normally would, a quasi flush, if you will. (water it with almost twice as much as you normally give it, then let it sit for about a half hour and then do it again) Then, the next time it needs water, give it a small dose of water soluable 20-20-20. It should stop it from getting worse, although the areas that are already yellow are not going to come back.

I had problems when I grew multiple strains, I found it hard to manage their needs. They all like things slightly different, some like the soil more acidic than others, some take in nutes better, or need more than others. Point being, whats good for one might not be enough (or too much) for another (in regards to strains).

If this is nirvana's AK-48, I have found that my phenotype prefers a PH around 6.0. They also like to be fed!

Looks like lockup to me from a high pH. I am growing GWS and AK48 as well. I agree 100% with THT, my 48 is loving soil at 6.0, GWS likes a nice neutral 6.8-7.0 range... You said your pH 6.9, from my experience go above 7.0 at all and your plants will hate you.

And btw, Great White Shark from GHS is one of my favorite strains to grow and to smoke. Best Indica out there! Good Luck