 | BCB Fluid for cleaning Bubble tubes, Columns and Walls Protect your bubble tubes from green algae Based upon the proven BCB Tablets our new fluid product features the following: Protection & prevention of infection risk from common aerobic bacteria including Pseudomonas species & Legionella. | Special offer Bubble Tube Cleaning Fluid 500ml (2 years supply) Add once a month – 1 bottle treats a 1-metre bubble column for up to 2 years.£21.99 only £16.99 |