We recommend calibrating your FonaWise before first use and then once monthly thereafter using the included calibration sachets. This ensures you maintain the professional ±0.1 pH accuracy standard. The process only takes 3 minutes.

While the probe is IP67 waterproof and stainless steel, it is designed for spot testing and data logging. To maximize the lifespan of the glass electrode, we recommend removing and cleaning the probe between uses. The replaceable electrode design makes maintenance easy.

Yes! The FonaWise app is free to download for iOS and Android. It includes unlimited cloud storage for your readings, real-time trend graphs, and the custom alert notification system with no monthly fees.

FonaWise is universally compatible with all soil types including clay, sand, potting mixes, and loams. It is also highly effective for hydroponic reservoirs and nutrient solutions, making it perfect for both traditional and indoor growers.

FonaWise is powered by four LR44 button cell batteries (included). Thanks to the auto-standby feature which activates after 5 minutes of inactivity, one set of batteries typically lasts for 4-6 months of regular testing.

Inside the app, you can set a 'High' and 'Low' pH limit for your specific plant type (e.g., blueberries 4.5–5.5). If you take a reading that falls outside this range, your phone will instantly alert you, preventing accidental plant stress.

UK orders are shipped within 24 hours and typically arrive in 3-5 business days. We provide free standard shipping and full tracking for every order.