Practical knowledge for better water-sensing decisions

Article 13 | How often should you change aquarium water? Using data to decide when to change water

Water Testing During Fish Illness: What You Can and Cannot Do — A Step-by-Step Guide

When fish are sick, a household portable water-testing device can help you see water-quality swings and trends clearly, but it cannot replace laboratory analysis of key parameters such as ammonia nitrogen and nitrite. Using the AtomBit Water Detective 4 as an example, this article explains the applicable boundaries of water-quality screening during fish illness, reproducible measurement steps, interpretation of results, common interferences, retesting and indications for referral to a laboratory, and includes a record sheet and action checklist.

Article 14 | What is Water Detective? How to Choose Between the Home and Aquarium Versions

Which parameters must be tested separately during new tank cycling: a step-by-step guide

During tank cycling, ammonia nitrogen, nitrite and nitrate must be tested separately, while TDS, conductivity, salinity, hardness, turbidity, UV254, TOC, COD and others can be screened and trend-monitored with Water Detective 4. This article provides a reproducible step-by-step guide covering sampling, measurement, interpretation of results and an action checklist.

What TDS readings can and cannot answer

TDS is the most frequently displayed indicator in water purification products, and also the easiest to misread. This article is aimed at smart small-appliance brands, product managers and hardware engineers, and, combined with the multi-parameter screening capability of AtomBit Water Detective 4, presents the questions TDS can and cannot answer, reproducible sampling steps, common interferences and an action checklist to help teams use TDS in the right places in filter management, user experience design and technical communication.

Risk communication for well water near agricultural fertilized areas: a practical checklist for rural households and on-site screeners

When using well water near agricultural fertilized areas, how to use a portable water-quality test pen for trend screening, which indicators can be checked, which must be sent to a laboratory, and when to stop drinking or refer for testing.