Q. This is my first summer as an in-ground swimming-pool owner. Within the past few days, the afternoon heat and summer rains caused green algae to grow in my pool -- on the steps and the swim-out and ...

Algae can show up in all the wrong places: pools, patios, decks, roof shingles, rain barrels, fish tanks, birdbaths, and steps. If left unchecked, algae can be more than a nuisance — it can be a ...