Distilled water will bind and lock onto a large amount of your nutrients. Basically you will need to add nutrients to make the distilled water into normal water then you will have to figure out what will be available for your plants. EC and PH measuring will assist but just use tap water which is most likely at 7 ph and ready to roll. Personally I used RO water for years, total waste of time and money imo. These plants are not fragile.