Review on Lifegard Aquatics 5 Way Test Strip: Quick & Accurate Water Quality Analysis by Tony Reid

Nothing can replace a real test kit. I only use them between water tests. I always tell people never to use this as their primary test. I test my water on Saturday or Sunday every week, but in the middle of the week I'll use it to do gut checks - if those things show something's wrong I'll take a real kit and check. In most cases I find they read slightly lower or slightly higher. It's usually not far away, but I'd like to know for sure.