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Your cart is empty.Banish is a fast-acting, highly effective, patented, non-foaming algicide that produces results in 24 hours! It kills all types of algae in swimming pools. Thanks to a patented chelant, Banish also prevents staining that commonly occurs with other copper-based algicides. Product Information: 3.3% copper pH 2.4 Highly effective pool algae destroyer and preventative Fast-acting formula produces results in 24 hours (when used in conjunction with BioGuard Shocks) Patented non-staining, non-foaming formula Kills and prevents green, mustard and black algae Works in chlorine and bromine pools Does not affect pH so pH adjustments are unnecessary after treatment. Directions for use: To prevent pool algae 1. Adjust pH to between 7.2-7.6 2. Establish and maintain proper chlorine or bromine levels 3. Vacuum leaves and other debris from your swimming pool 4. Initially apply 8 fluid ounces of Banish per 10,000 gallons of pool water with pump and filter operating 5. Thereafter, for weekly application intervals, add 1.5 fluid ounces per 10,000 gallons of pool water. For two week application intervals, add 3 fluid ounces per 10,000 gallons of pool water every other week. 6. Apply more often if pool volume is diluted by heavy rain, frequent backwashing, or partial drain/refill. Treatment of visible pool algae: 1. Add 1 pound of BioGuard Burn Out Extreme per 10,000 gallons of pool water or 1 pound of Burn Out Extreme 35 per 6,000 gallons of pool water or 1 pound of BioGuard Smart Shock per 12,000 gallons of pool water. Follow application directions for these products.
sccustomer
Reviewed in the United States on March 25, 2025
Only thing that worked for us. Thank goodness for this product
Wendell
Reviewed in the United States on September 29, 2023
My filter was @ the end of it's usefulness. Bought filter 2021. I had a stain that was stubborn in deep end above ground pool. It looked like a light mustard stain. I put a bottle in, helped some. Checked water it needed alkalinity raised & vitamin D. Tried another bottle, still light stain. The day of closing vacuumed pool again & starting closing process of draining to get pump shut down & cover on, finally clear. Closed pool & water/liner looked as good as it had all summer. We had A LOT of rain end of season that brought problem up too. (Along with wore out filter) Draining under hose level/skimmer bucket I will be adding pretty good amount of fresh water @ opening in Spring 2024 that should help get me off to a good start. Only a (3) because I had to use (2) bottles & the cost. I would have probably been better off getting something for vinyl stain instead of algae killer??
jeff heckman
Reviewed in the United States on September 19, 2023
This stuff does the trick to get rid of stubborn algae and keep it away.
SOBOO1
Reviewed in the United States on July 26, 2020
Works great.. clears up our pond quickly
Customer
Reviewed in the United States on July 25, 2020
Good job
Customer
Reviewed in the United States on September 14, 2017
We have found this to be the best product for removing green algae. There is little to no scrubbing the sides of the pool
K. Neal
Reviewed in the United States on October 14, 2017
Best algaecide out there. I've tried many and this is the only one that keeps our light blue colored pool free of green algae growing on the walls and red algae from forming in the skimmers. No algae period. Recommend even though it is on the pricey side. We add 3oz per week to keep the green at bay.
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