Growing in soil is best and the easiest. Organic soil water only is the way to go. This makes a lot more sense than buying nutrients over and over again. It is very simple to achieve and cheaper on the long term.
Look for a living soil recipe online. If you are intimidated with all the things listed their, you can buy some online. (I am using SSW Stepwell super soil). With a rich organic quality soil it all goes along easy: no pH, no ppm, no feeding, no flush, no headache. All you do is put in some water. I have been using tap for months in same soil. It it a little pricey to start but you just have to reuse the soil. Add some dry amendments, some minerals and you are good to go!