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By: Rick Gallant of Aquatech of Florida located in St Petersburg, FL.

System History
This BAC Cross Flow cooling tower is located in Clearwater, FL. The system was without professional treatment for 2-3 years and the last known treatment approach was zero bleed. The system uses softened water for makeup and must have had interruptions in softener service as the tower fill is loaded with calcium carbonate scale.

With ProMoss™ treatment
We observed calcium carbonate scale begin to detach from tower fill within two weeks of ProMoss™ being introduced to the system. We observed removal of organic contamination from surfaces as well. Over the first two months of treatment, we had to vacuum out scale debris from the tower basin every 2 weeks (see images below).

Added ProMoss™ 3 to system. Went back 2 weeks later and vacuumed out tower basin. Went back after another 2 weeks, vacuumed out basin once again and changed out ProMoss™ 3.

After 2 weeks:

Picture was taken during evaluation when system was off line:

After 4 weeks

After 6 weeks: