Bio-Sub - Slow Release Biocide Buoy


Slow release bromine/chlorine biocide buoy for long term protection from algae, slime and bacterial growth, including Legionella.



Bio-Sub is designed for use in evaporative coolers (swampies) for long-term protection from algae, slime and bacterial growth, including Legionella. Bio-Sub contains slow release bromine/chlorine tablets and is a non-foaming, easy to use product. Bio-Sub may also be used in small cooling towers.


Directions for Use

Ensure system is cleaned of all fouling contamination. Place the Bio-Sub buoy into the water basin and hold under water until the buoy sinks. Do not leave floating. When buoy is approximately 90% spent it will float to the surface, indicating that a replacement is required. Routinely monitor to determine the average life of the Bio-Sub buoy in the system. Depending on the system, each buoy should last approximately 3 months. Do not replace until spent, or use more buoys than required as overdosing could create a chlorine odour.


Pack Size

4 Bio-Sub Buoys


Product Tips

Regular physical cleaning of the evaporative cooler pads and basin extends the life of the Bio-Sub. Bio-Wash is recommended for cleaning and disinfection of the system if required. Refer to Bio-Wash product bulletin instructions.

Water treatment of small cooling tower systems should include a secondary biocide and inhibitor program. The use of Bio-Bloc and Rust-Bloc is recommended. Refer to product bulletins for instructions.


Safety Information

Avoid contact with skin and eyes. Wear protective eyewear and gloves when using. Wash hands and face with soap after use. Toxic by inhalation. Can cause severe burns. First Aid: For advice contact the Poisons Information Centre. Phone 131126 (Australia) or a doctor at once. If swallowed do NOT induce vomiting. If in eyes hold eyelids apart and flush the eye continuously with water until advised to stop by Poisons information centre or doctor, or for at least 15 minutes. If contact with skin or hair occurs, remove contaminated clothing and flush skin or hair with running water. Refer to the SDS for further information.