When we reviewed the original Crystal Water Monitor, it earned high marks for its ease of use and accurate readings. The 2025 Crystal Water Monitor reviewed here is just as easy to use and comes with ...

CNET staff -- not advertisers, partners or business interests -- determine how we review products and services. If you buy through our links, we may earn a commission. Portable monitors are a simple ...

The Crystal Smart Water Monitor measures a swimming pool’s water conditions every 10 minutes, but its industrial design makes it a poor fit for pool owners who care about aesthetics. $449.00 plus $99 ...

Greetings from Maryland, where I’m currently visiting family and using one of the best impulse buys I’ve made in recent memory. I’m taking about those cheap portable monitors that go on sale for about ...