Staff Answer
Jun 15, 2026 - 07:43 PM
You would only add the whole gallon if your fresh water tank is approximately 100 gallons. Star brite lists this product as treating up to 100 gallons of tank capacity. For a smaller tank, use a proportional amount based on your tank size. The general process is to drain the fresh water system, fill the tank about halfway with fresh water, add the proper amount of Water Tank Flush for your tank capacity, then finish filling the tank and circulate it through the plumbing. After flushing, the system should be drained and rinsed with fresh water before use.
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