Roots Original soil? Not hot at all,... the Bizz is so light it's like a seedling starter mix, so between them, they are far far from even a minimal input soil,... KISS can be $$, if you want to buy and ship "water only" soils,... even then, some inputs are recommended, like teas, inoculant, Si, humic-fulvic, kelp/micronute supplement....
A lot of folks are getting nice results with Megacrop (Greenleaf Nutrients), which is a complete all-in-one feed,... that said, many also reduce the MC during bloom and use a PK booster to lower the N input and raise PK (MC is N heavy)....
regardless, there's no getting around monitoring your pH in-pot, and testing and adjusting (if needed) you inputs goes a long ways to saving hassles and fixes down the road... TDS meters are inexpensive, and while you may not need it all the time, it give vital info about your water and nute solution conc. which again, goes a long ways to preventing issues.... things like hard tap water can become an in-pot pH issue as the minerals build up,....
