I appreciate the great advice and observations. You are giving me hope. I had been alternating the mite sprays with a GH foliar feeding to avoid leeching effects and I was certain that was the cause of the initial mottling, but it kept progressing, long after the spraying has been stopped.

Several of the plants were heavily flushed with ppm/PH readings showing no more salts were coming out. They are the ones with the lighter shades of green in the flowering area. It has not slowed the progress of the necrosis however. Increasing the formula for others caused a little burn but nothing severe and also did not slow or stop the spread.

Regarding ventilation and low ferts. Totally agree, but it is by design, the mother/clone box has been used for years and due to the limited space and the need for only 20 clones once per month, I prefer the mothers grow slowly. Though intentionally allowing a plant to become chronically undernourished and eventually root bound may seem crazy, it has never been fatal and they serve their purpose quite well, sometimes for 2-3 years before being replaced. They usually only get ferts with every 3rd or 4th watering.

The flower room is new for me but if anything it is over-ventilated I think. With 192 total cubic feet being serviced by a 172cfm can fan combo should recycle all of the air in the room in just over a minute. I installed an intake vent with a back flow flapper at the floor of the room next to the door to make sure there is minimal resistance. Synchronizing the CO2 injection was a pain since I am used to an external intake through a sealed light cooling system instead of an in room pull through like this one but I have suspended it for now so as not to waste it on sickly growth.

The flowering plants have shown the same symptoms at the same time while having a different fert formula and there wasn't a dead leaf on them the day they were sprayed with the tobacco tea at almost 2 weeks into 12/12 and a total of 6 weeks from clone transplant. They weren't what I would consider perfectly healthy from all the spraying, but there was nothing dying and falling off.

I wasn't sure about the grow bags, this is my first time using them and they seemed like a good choice. Though with the extra movement from squeezing more plants than planned into that area I am sure there has been some damage and I probably will not use them again. These are new strains for me from seed and I had planned to use soil initially to weed out males and pick my favorites before transitioning to a SOG in an ebb and gro system.

The mothers usually look kinda sickly (red stems and whatnot) but once I place the clones in the water tub, they perk right up, root within a week then start rapid healthy new growth before I usually get around to transplanting them after 10 days or so. Attached is a pic of a clone on day 5 that has steadily gotten worse. It was healthy and green when it was cut and has white pre-root lumps on the stem indicating it is progressing normally other than the necrotic spots.

The cigs used were Winstons, supposedly additive free. Yeah right, I don't believe it either. Most of it was butts, however I did add a couple of whole cancer sticks because it didn't look like I had enough. I have always smoked in the rooms, often taking cuttings while juggling a cig. I have even put them out by touching the cherry in reservoirs. Nasty habit I know, but it was never an issue and I would be the first to call BS on claims of a virus spread from handling them around plants.

Don't get me wrong, I value the advice and really hope I am mistaken, but I have never seen anything like this. The fact that it is so consistently progressing in different isolated environments and against normally successful countermeasures makes it difficult for me to accept it is nothing more than lockout, bad nutes, poor ventilation, and/or outgrown containers which I have never had a problem diagnosing and correcting before. The timing of it is uncanny as well but I truly hope it is just coincidence. The pics I have viewed of other plant species with mosaic virus look similar but that is a poor comparison which is why I have committed, what is for me, a desperate act and posted for more information.

If someone can provide a detailed first hand description of TMV progression and patterns or provide some pics which can help me eliminate it as a possibility it would be greatly appreciated. I have already sprouted new seedstock in the sanitized veg box and will be getting fresh clones over the weekend so I want to identify the cause before it could set me back again.

I will flush with PH balanced water, then add 1/2 strength ferts (giving earth juice a try) as recommended on those that haven't been flushed. The clone/mother chamber will be kept open over the weekend to allow more ventilation and I will replace select mothers, hello herm . The flower room will also have the door cracked the next few days to make sure there is ample airflow. Temps are usually in the lower 80s in there and getting them down further cannot hurt.

Is it possible the No Pest strips could harm the plants like this? Or could I have encountered a type of mold problem from the new area that is hard to notice otherwise? Sorry I write so much, I just want to be as thorough as possible. Thanks for taking the time to wade through it all and offer some feedback.