Thanks alot for yr help guys, turns out it was a simple lack of air getting to the roots that was causing the majority of problems due to my foolish watering techniques, so I've been advised to replant with 40% vermiculite. I am re-potting later today & will put up photos of the hopeful progress that the plants will make in a week or so after they recover from the traumatic ordeal of my oafish greenthumb...
Got the Bacillus Subtilis at the ready, thanks again for dropping science Stinky!