Another sickness overcomes my plants.

[BapusO]

I've been growing for a few years now and I find it increasingly difficult to diagnose plant problems; always something different. My nephew left me 6 plants when he took off again and they are all afflicted with... something. I sent pictures, hopefully that will help. All of the 6 plants are otherwise healthy, albeit very slow growing and all have the same problem. All was well then all 6 plants started getting burnt tips and edges, then the whole leaf turns brown and dead. Most of the plants also have yellowing between the veins. I've seen this symptom before but can't find now. They are planted in about a 2-3 gallon pots in soil. Using very little nutes for now, just using Ph'ed water. Since all of the plants are doing this, I figure it's something about the soil. I tested the Ph of the soil and it was high, about 7.5 or so but I have had high Ph before and not had this problem. I don't know what my nephew did to them but they all dying on the vine; I started flowering them but don't think they will last 'til harvest. I'm at a loss as to what's happening or what to do about it. Any help you can give will be appreciated. Was hoping someone with more experience can look at the pics and immediately tell me what it is and what to do. Later on.

[Mr.furley]

Hey BapusO,
A little more info will be needed to help like what kind of soil, nutes, watering schedule, lights, age, sure help. first you need to get that ph down to 6.5 at least. the yellowing in the margins you speak of could be Potassium Deficiency but I wouldn't act on it till your Ph is in check. A picture in the setup would be helpful too.

[Buddy]

First flush with 6.5 water maybe a couple of times test p again are you use cal-mag ,Poland springs water is 6.5 right out of bottle you will be fine in a couple of weeks good luck

[Buddy]

If the ph isn't right you get right nutrients but start giving it something after the flush