Those sensors can be useful, but only if you act on the data. They’ll give you precise moisture, pH, EC and sometimes nutrient trends, which is handy if you’re trying to avoid over‑watering or under‑fertilizing. If you just plug a unit in and watch numbers flicker without a plan to tweak watering, fertilizing, or drainage, it’s just another fancy logbook. So, check that the system tells you what to change and that you’re willing to change your routine; that’s when it actually helps plant growth.