BioGuard Banish Algicide - 1qt

Dependable product. Has never let us down. Should purchase multiple bottles for initial use. Need 1quart per 20,000 gallons of water!! Our pool is closer to 30,000; plus weekly then biweekly doses

Banish immediately solved an algae problem i have been having for the entire summer. Both yellow and green algae have been returning despite frequent shocking and use of polyquat 60. Within 4 days of the initial dose of Banish, algae is completely gone and all chemistry is stable. I'm using this with a 25k gallon pool with a vinyl liner.

Easy to use—I had to use the entire bottle (17000 gallon pool) 2 weeks in a row after super shocking my green pool. It seems to be helping with the algae.

It does a good job.

Very glad I was able to buy it online.

Great product - keeps water crystal clear for weeks!

I love this stuff it's the only thing that took away my mustard algae . However, you have to make sure you triple shock the pool.

Well I can't really say because I had mustard algae and no products worked so can't give a bad review but this product did not work either so I'm back at beginning of source

Had high hopes based on reviews but it did nothing. Your price is much higher than anywhere else, I should have researched my fault.

Product made zero difference.