Funny you mention arrows—I actually tried something similar when we redid our rainwater harvesting setup last summer. I thought symbols alone would cu...

I've had good luck with mirrors too, especially in tight spots under sinks. Once caught a tiny drip that would've gone unnoticed otherwise. Curious th...

Had something similar happen a while back—turned out it was a sneaky partial clog deep in the pipe, not even visible at first glance. When the tank re...