Gard'nClean Liquid: Sanitization and General Cleaning Applications for Water Lines and Tanks in Potable Water Systems

This product will reduce microbial populations in the potable water holding tanks and lines

of recreational vehicles (RVs) and boats; in marine and RV wastewater tanks and lines; in fountain drink or other beverage preparation, storage, transfer and dispensing lines and equipment; and in coolers, thermoses, plastic water bottles, and other water storing and dispensing systems used for picnics, camping, and other recreational activities. In addition, it will clean, eliminate odors, and remove organic matter. These uses must be followed by a potable water rinse.

NOTE: If the tank system is cleaned frequently, then consider the level of contamination to be low to moderate. If the tank system is used heavily, notably fouled, cleaned irregularly, or going into or coming out of overwintering, then consider the tank(s) level of contamination to be high.

1. Based on the judged level of contamination (see box at beginning of this application section), determine the number of GC 30 envelopes necessary to clean the tanks and lines in the water system according to the following table:

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Note: Verify concentration using Gard'nClean® Test Strips. For concentrations above 10 ppm, use Gard'nClean® Wide Range test strips; for concentrations of 10 ppm or less, use Gard'nClean® Low Range test strips.

2. Drain all water tanks completely. Then, refill tanks to approximately 10-20% of capacity with potable water. For example, put 50 gallons (approximately 185 liters) of water in a tank of 500-gallon capacity and 250 gallons (approximately 945 liters) of water in a tank of 2,500-gallon capacity. Immerse the number of GC 30 envelopes (as determined in step 1 above in the water tank). Do not add additional water. Do not refill tank. Close the tank.

3. Wait 2 hours for the GC 30 to generate, and then remove the spent envelopes. Close the tank. Discard envelopes according to the instructions on the package label.

4. Circulate the GC 30 solution through all lines and within or between tanks using the system’s pumps.

5. Run approximately 6 ounces of the GC 30 solution through each outlet (faucet, shower etc.) and let the solution stand in the tanks and lines OVERNIGHT (approximately 12 hours).

6. The next day, or after twelve hours, flush the GC 30 solution through all faucets and outlets until the tanks are empty.

7. Refill the tanks with rinse water to approximately 10% of their capacity.

8. Circulate the water and flush rinse water through all faucets and outlets until tanks are empty.

9. Tanks are now cleaned and can be refilled for use or left empty for storage

10. Dispose of package(s) and spent GC 30 envelope(s) according to instructions on package label.

For more information please reach out to a Gard'nClean Advisor at hello@gardnclean.com or 888-369-1975.