Check the listing for details. BioGuard SoftSwim B - 1/2 gal (2 Pack). Condition: New. Listed at 75.98 USD. BioGuard SoftSwim B is the sanitizer that contains biguanide and is step 2 in the Soft Swim program. This step kills and controls harmful bacteria and is gentle on eyes, hair, and skin. SoftSwim B is UV-shielded and is resistant to evaporating in the sun. The SoftSwim program is ideal for in-ground or above-ground pools containing less than 25,000 gallons of water, pools that have bottom drains, and pools that have excellent circulation with the pump operating at least 12 hours per day. SoftSwim sanitizes with biguanide. Product Benefits: Stops the spread of disease via pool water by effectively killing & controlling bacteria Contains biguanide which is the key ingredient that makes this program so different than chlorine-based sanitizers Gentle on eyes, skin, and hair UV-Protected Dosage: Start Up: 1/2 gallon per 10,000 gallons of water to get a content of 50 ppm Routine Maintenance: 1 pt per 10,000 gallons of water to raise level by 10 ppm