Most anti-depressants contain some form of halide. Also remember that anti-depressants will cure nothing, since they are only ever meant to ensure that you are not a danger to yourself or to other people. I dislike drugs as a general rule because they don't tend to cure anything anymore -- all they are supposed to do is just manage your symptoms. This is useless to a sufferer or patient because this means that his or her disease will inevitably get worse -- because they are not treating the core reasons for the disease with never a cure in sight. But this is a brilliant business strategy by the drugs companies because it means that you are hooked for life by their propaganda and so they will have one heck of a money stream from you for the rest of your life. See this video by Shane Ellison, an award winning Phd researcher who worked for some top drugs companies.
Your question "do you know if drinking high ph water can set one up for or contribute to candida in some way?"
High pH water has alkaline pH and is generally good for you. I've also helped to write a simple book on alkalizing called pH Balanced for Life! which explains it all. But Dr Jerry Tennant also explains pH in terms of our critical body electricity and explains why our body needs more negative ions(alkalinity) than positive ions(acidity). It's all about proper balance. Generally our bodies are too acidic due to our supermarket and junk food diets, poor farming and food processing methods and lifestyles. I usually alkalize every day as a good habit since, where I live in the Philippines, the goodness of food cannot be guaranteed. I do this to counteract and avoid too much body acidity. I'm 65 y o by the way, with no disease or ailments to speak of now and I've been alkalizing my body for the last 10 yrs with no ill effects. Generally, I've found that whenever you have candida or any serious disease or whenever you take drugs, the body becomes substantially more acidic which then tends to greatly weaken the immune system and leaves the body with a greater tendency towards serious illness and disease.
Similarly, just like yin and yang, it is also possible for your body to be too excessively alkaline -- this is rare but can occur with certain serious liver or kidney problems and can also occur when you have parasites.