If you’ve noticed a dark or black stain right along the waterline of your Pebble Tec pool, you’re not alone. This is a super common issue pool owners run into—especially late in the season when water levels fluctuate and debris or algae starts to stick around a little longer than it should. The good news is, there’s a super simple fix that doesn’t require any special equipment or expensive products.

In this video, I’m walking you through a quick, effective way to remove black stains on Pebble Tec. I’ll show you how to do it step-by-step, and also throw in a bonus tip for cleaning up white calcium buildup on tile. It’s all about staying ahead of the grime and keeping your pool looking its best.