pretty easy to use and efficient although I'll try something else as I faced nutrilock after few weeks due to a possible contamination on the rhizoponics that was left open way way too long.
I remember out of the 4 plant 3 had their tap root broken (I waited too long in the smartstart and I handled em like a tard) and the couples nutritient lock, many under watering, they kept doing the best bud I ever had