getting problems with fedding, prob the high doses...

That one plant seems to have the "tobacco mosaic virus", unfortunately there is no cure for that. Here some infos from a well known cannabis site: Luckily TMV probably won’t kill your plants, and there’s no evidence it will hurt you if you harvest the plant, but infected plants grow slower and end up producing smaller yields so you definitely want to keep it out of your marijuana garden! Unfortunately, when it comes to mosaic virus, there is no cure. An infected weed plant will have TMV forever, though it may not always be actively showing symptoms. If you believe you have a marijuana plant with TMV, your main goal is to prevent it from spreading to other plants! In greenhouse and commercial operations, the main way to deal with mosaic virus is to dispose of all affected plants, including any soil they were growing in, and enforce a strict policy of hand washing between touching plants. “Mosaic” disease is caused by a virus. The tobacco mosaic virus is very stable and can persist in contaminated soil, in infected plant debris, on or in the seed coat, and in manufactured tobacco products. The virus is transmitted readily from plant to plant by mechanical means. This may simply involve picking up the virus while working with infected plant material, then inoculating healthy plants by rubbing or brushing against them with contaminated tools, clothing, or hands. Virus diseases cannot be “cured” once a plant is infected! Therefore, every effort should be made to prevent introduction of virus diseases into the garden. Sanitation and cleanliness is the primary means of controlling virus diseases. Infected plants should be removed immediately to prevent spread of the pathogens. The use of tobacco products during cultural practices should be avoided to prevent inoculation of plants with the tobacco mosaic virus. Anyone who uses tobacco or works with infected plant material should wash their hands thoroughly in soapy water before handling marijuana plants! I would put her out of the tent as the virus, if it is the virus, can spread to other plants. And for the dark green color, it seems like a nitrogen overdose. Keep cool and only gibe water without growth nutrition till the leaves come back to normal color.