By killing the ladies what do you mean exactly? Are your plants dying or is that a bottom leaf from bloom? One picture of one leaflet shows nothing. For all we know you didnt water and she dried out. Pin the tail on the invisible donkey. Fail.
Yeah I have a brewer I use tap water and ph it to 6.5 and also brewing super LIGHT teas with guano, earthworm castings, biolive, and molasses... I dont feel like it could be the teas cause I'm going super light on them.