90-Day Algicide Returning An Empty Bottle?:Yes This non-toxic

This non-toxic

Total Bromine

it connects easily to any standard 1-1/2" vacuum hose and 1-1/4" pole — no tools required

An affordable

Fits standard 1-1/4" snap-lock poles

90-Day Algicide Returning An Empty Bottle?:Yes This non-toxicLong lasting protection. Just one dose every 3 months This 90 Day Algicide is a powerful, copper based formula designed to kill and prevent all common types of pool algae including black, blue green, and mustard varieties. One treatment lasts up to 90 days, keeping your water clear and protected all season long. The non staining, slow release formula is safe for all pool finishes and works alongside chlorine, bromine, and saltwater systems. It