If you’re diving into DIY projects that involve water quality, the 3 in 1 Waterproof pH and TDS Meter is a must-have. This handy tool checks pH levels, total dissolved solids (TDS), and temperature. It’s perfect for everything from testing your aquarium water to checking your garden's soil moisture. The waterproof design means you don't have to worry about spills while you’re working, and the easy-to-read display helps you get accurate results fast.