Hey Pool Owners! Here’s the ONE thing that will kill algae in your pool. And it’s NOT algaecide. Algaecide works to prevent algae. It can also help treat early-stage algae blooms. But if your pool is already green, algaecide won’t do the trick. If you’ve got green water you must kill all of the algae spores to prevent another algae bloom. To do that, you need to use CHLORINE SHOCK. Non-chlorine shock doesn’t directly kill algae. So use Cal-Hypo or Dichlor chlorine shock to completely kill the al