Yellow Out Algaecide 4 lb by Coral Seas - 17614COR

Banish persistent yellow and mustard algae from your swimming pool with the 4-pound Coral Seas Yellow Out Algaecide 17614COR. This powerful formula amplifies the algae-killing capability of chlorine-based shock treatments, breaking down tough algae colonies without any manual scrubbing required. Safe for every pool surface including vinyl liners and fully compatible with saltwater chlorination systems, Yellow Out delivers noticeable water clarity improvement in just 24...

Yellow Out Algaecide 2 lb by Coral Seas - 17612COR

Tackle stubborn green and mustard algae head-on with Coral Seas Yellow Out Algaecide. This 2-pound treatment represents a breakthrough in algae control, delivering visible results in as little as 24 hours when applied before shocking with an EPA-registered chlorinating product. Formulated to perform across all pool surface types, Yellow Out excels in water with elevated pH (7.8+) and high cyanuric acid levels where traditional treatments...