I would check your topoff water and make sure your RO/DI unit is functioning properly, if using one. The green hue is ok, but the clams are bleached. Also, dosing alcohol doesn't seem to make sense IMHO. Alcohol is a stressor of all cell types, including bacteria, and in the lab we use alcohol to stimulate hyperventilation of the cell. It has the similar effect of applying heat to cells - speeds up metabolism, although stressful. Alcohol also effects membrane permeability. I guess it's diluted out of toxic concentrations, but I am doubtful you'll find Stoli Vodka in the natural marine setting
.