Pond Force™ Pond Bacteria Cold Water Blocks LED but you will also reap

but you will also reap the other benefits of a biologically healthy pond: sparkling water

Avoid pump overheating by keeping the water level from getting too low

100% free of lead

healthy and algae-free over the long haul

use air stones rather than these diffusers

Pond Force™ Pond Bacteria Cold Water Blocks LED but you will also reapPond Force Pond Bacteria Coldwater Blocks contains strains of beneficial bacteria that work naturally to clarify water and reduce sludge. This treatment is specifically designed for spring and fall, working in water temperatures between 35 and 95 degrees Fahrenheit. Each packet treats up to 1000 gallons.