Ever notice your bird bath water turning a weird red, no matter how much you scrub? Turns out, it’s not a horror movie—just red algae! Reddit sleuths say the culprit is sunlight-loving algae that loves porous concrete. The fix? Clean it with vinegar or bleach, refresh the water often, or move it to a shadier spot. Some even swear by a Milton tablet for extra freshness. Who knew bird baths could be so high-maintenance? #GardenMystery #BirdBath #HomeHacks #Pets