Bennelli, yes, I'm down with the use of distilled water, that's what I was using in combination with the Simple Green; I use my well for drinking water, it feeds the whole house though so I'm conscious of what chemicals I pour out onto the ground. The well is 100 ft deep, in good solid Virginia clay, but still, I'm always afraid of 'creep'.
I didn't mean to get 'this deep' into a conversation about what you're using, just wondering what combination of 'what' everybody may be using and what yields the best results.
30-liter tank, NO idea what I'm going to use as yet.