Probably the 16-hour photoperiod your kit shipped with — and HydroGardenAdvisor is the app that tells you so. Plan the setup before you start seeds, check in with a photo when something looks off, and find out at harvest what to change next cycle.

Three moments in every grow cycle where a straight answer matters. HydroGardenAdvisor covers all three.
Pick the crop and your system type. The full setup plan appears instantly:
Snap a photo of your plants. You get a diagnosis, not a shrug:
Log the result. HydroGardenAdvisor tells you what to change next cycle:
Every crop gets its own photoperiod, nutrient targets, and failure-mode vocabulary — not one generic formula stretched across everything green.
Multi-stage nutrient management, pollination reminders, and stage detection — the setup, check, and harvest loop covers the full season, not just the seedling stretch.
Setup plans and harvest logs are free and unlimited, always. Pro only covers unlimited photo diagnoses.
No account required
or $4.99/month — less than a bag of nutrients
Coming soon to the App Store and Google Play.