I haven't been doing anything about those few plants that have issues. I got kinda side tracked for a bit. (unrelated)

I'm going to do flush with DNF Clear over the weekend unless anyone has a better idea.

Not really wanting to start adding random stuff if I don't even know if its a deficiency or an over abundance never mind having a clue as to what.

Ive tried no nutrients for a couple of weeks and that just made the newer growth yellower so I've started back with the nutrients.

I give the same thing to all of them at the same time. All the soil came from the same bag. I'm on the same bottles of nutrients I started with. There is no cold or hot spots in the rooms. There are 8 different strains roughly only 8 effected plants. The issues seem to favor a strain at all. I'd say its fairly diverse so far. But gradually effecting more plants as time goes on.

There seems two distinct issues. The leaf edges curling up and the other is the rusty looking spots and dying leaves. 2 of them have both problems.

The mite issue is hopefully a thing of the past as I've been hitting them hard. They never got any where near to bad and only barely occupied 5% of the plant count. I've been treating all the plants to the same mite solution regardless. (such a pain in the ass!)

I'll try for pictures again tomorrow sorry not fallowing threw with that today.

I'm only really worried about the fact that it seems to be effecting more plants with time. As a percentage its not to big of a problem for the moment because I have more plants then I have room for due to.... a story for a another time.

Here is a thread I started over in indoor growing that explains more on the crowding issue.

http://boards.cannabis.com/indoor-gr...-solution.html
JoeBlow78 Reviewed by JoeBlow78 on . Having trouble figuring this out. Need some advice What is your experience level? first timer Your Equipment: .1) Type and wattage of lights? T-8 6500K VEG / SUN MASTER WARM DELUXE MH 1000W DIGITAL FLOWER .2) Distance from tops? T8@3" / HID @ 28" ON A 6' LIGHT MOVER .3) Reflector type? 36" WHITE PARABOLIC .4) Is there a consistent fresh air supply? YES .5) Do you have an exhaust fan and a circulation fan? YES .6) What are the bulb kelvin ratings, and schedule? Rating: 5