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SupaGard KilBac
Global Water Technology Company
Water Treatment
UK
Cost Saving, Reduction of Downtime
Marine Technology
Water test tanks are commonly used in marine technology environments to simulate operational conditions and validate equipment performance. These tanks must maintain high water clarity and low microbial load to ensure accurate testing and safe handling. However, open tank systems are particularly vulnerable to bacterial contamination, especially when exposed to ambient conditions and intermittent use. Traditional filtration methods, such as sand-bed filters, often fail to individually control microbial growth effectively, leading to discolouration, increased chemical dosing, and operational downtime.
A global water technology company specialising in underwater acoustic, positioning, navigation, and communications systems required a more effective solution to manage water quality in its on-site test tanks. With operations spanning energy, defence, and marine science, the client depends on high-performance infrastructure to maintain the reliability and safety of its systems.
The client was experiencing persistent bacterial contamination in its 90,000L water test tanks. Over time, bacteria accumulated, causing green discolouration and compromising water quality. The tanks relied solely on traditional 20-micron sand-bed filtration, which was ineffective at controlling microbial growth on its own.
To mitigate the issue, the team resorted to heavy chlorine dosing and frequent monitoring.
This approach led to:
High chemical usage and increased operational costs
Occasional tank shutdowns due to contamination
Constant maintenance and staff intervention
Unreliable water quality and operational inefficiencies
Recognising the need for a more reliable solution, the customer contacted Amazon Filters. After assessing the challenge, Amazon Filters recommended the SupaGard KilBac depth filter cartridge.
Designed to combat bacterial growth and contamination, the KilBac SupaGard incorporates antimicrobial technology within the filter media, actively inhibiting bacteria throughout its service life. Running at a flow rate of 20m3 per hour and with fine filtration of 1 micron, it provides needed extra protection to assist the existing 20-micron sand-bed system.
Key benefits of KilBac SupaGard:
The approach was simple: trial KilBac SupaGard in one tank and measure performance against the existing system.
From the first weeks of use, the client noticed a clear improvement in tank performance:
The results were further validated by third-party testing.
This independent evaluation confirmed what the customers team had already observed: there had been a huge improvement in bacterial control and water quality, with benefits sustained over time. See test results below:

Importantly, these positive results were achieved after only a few months of using the Kilbac SupaGard.
Encouraged by the success of the trial installation, they are now implementing this solution across their other tanks, ensuring consistent protection and efficiency throughout their operations.
We'll make sure you're getting the best out of your filtration system