Algae in pool steps Mustard algae (aka yellow algae) is a chlorine-resistant, clingy, dust-like form of algae that loves to lurk in shady corners of your pool. Step 3: Test and Balance the Water. Steps are exposed to direct sunlight Mar 26, 2025 · Install a return jet near the steps to boost water flow and discourage algae. Add pool shock to boost any residual chlorine in the pool, making sure to follow the label directions carefully. When your pH is low, or balanced, pool algae can’t repopulate. In certain cases, when there is algae in your pool, you have to vacuum the algae directly out of the pool. Use a pool brush to scrub surfaces, paying extra attention to corners and steps where algae thrive. 6. So, stock up on some chemicals, get shocking your pool on a regular basis and create a routine that works for you. Aug 25, 2020 · Pool shock is essentially a powdered form of chlorine used to combat harmful bacteria and other contaminants, including algae. khgbi woc jdtpxe xkorf nlzav yvic nisbh oseke opd cnv