Please help! I am quite lost, but I don't want my plants to die!

[sashepheee]

Any help anyone could provide would be greatly appreciated.I am new to this, and I am far past my ability to figure out what's happening, or how to rectify it.

I will try to list off issues that I have noticed, and I have a couple of photos that I will upload. If you all need more information, I can provide that as well.

List of problem:

1. Severe defoliation of lower areas, starting about a week ago, and not improving with more nitrogen

2. Yellowing of leaved, both low, and near the top, but never at the top. This yellowing sometimes starts at the base and works itself outwards. Other times the veins turn yellow and it works out from there. Sometimes the whole leaf just turns pure yellow. All of these leaves eventually turn brown and die.

3. Occasional browning in between veins.

4. What looks like burnt tips on new growth, but only on some stems, and it generally stops for a while if I clip off the new growth tip.



I feel like I've probably got 20 things going wrong, but the crazy part is some of the plants are doing quite well, even those that are the same strain as the one showing the most problems.

I'm tempted to think it's a ph issue, because I have had no way of testing that. It makes me want to just flush everything thouroughly, but I don't want to make matters worse. I do not Believe it could be bugs, as they have been in a sealed room that was not used for growing anything ever before.

 

[Scrappy-doo]

Well the bottom leaves are probably dying just from lack of light unless you have some side lighting. That's a thick ass bush you got there so I doubt a top light would penetrate that far down.

Most likely you're right on about the ph. Gotta get a ph meter bro or at least some ph strips, it'll save you a whole lot of headache later on and really couldbe the difference between a good crop and a total crapshow. Looks mostly like just some minor deficiencies but there's a couple real crispy looking leaves that look burnt to hell so be careful with your dose.

It doesn't look too bad though man certainly will recover if you get your ph in check. Those plants need a serious haircut though man or you're gonna have a hellova pita trimming. I'd gut the entire bottom 1/3 and all the tiny ass branches on the top 2/3. Shave them hairy legs!

If you wanna flush do a heavy watering with a light dose of food and it's gotta be ph'ed or won't help much.