Get answers to the most common questions we get asked about boat holding tanks and proper waste water practices.
If you don't find your answer here, don't worry, you can always email us: support@uniquemm.com
We recommend treating your Black and Gray tanks after each pump out.
Black Water Tank
1. Measure 2 ounces of Marine Digest-It per 10 Gallons of holding tank capacity
2. If possible, pour half of the measured treatment directly into the holding tank through the deck fitting and the other half flush down the toilet.
If you can't access the holding tank directly, flush the entire treatment down the toilet.
3. Repeat after each pump out
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Gray Water Tank
1. Measure 2 ounces of Marine Digest-It per 20 Gallons of holding tank capacity
2. Pour the measured treatment down a drain line that feeds into the Gray tank
3. Repeat after each pump out
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Use this quick-glance treatment guide to help you quickly measure the right amount of Marine Digest-It for your holding tank.
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Marine Digest-It Black Tank Treatment Amounts
40 Gallon Tank (or Less) - 8 ounces after each pump out
41 - 80 Gallon Tank - 16 ounces after each pump out
81 - 120 Gallon Tank - 24 ounces after each pump out
Marine Digest-It Gray Tank Treatment Amounts
40 Gallon Tank (or Less) - 4 ounces after each pump out
41 - 80 Gallon Tank - 8 ounces after each pump out
81 - 120 Gallon Tank - 12 ounces after each pump out
If you are struggling with a clogged or backed-up holding tank, unclog it without the expense of hiring a service tech to manually remove the waste.
Unique Tank Cleaner is a guaranteed solution for opening clogged or compacted holding tanks.
Marine Digest-It will digest and eliminate oils, greases, and odors that are often present in bilges.
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To use: Mix 1 cup of the Marine Digest-It with 5 cups of warm water in a pump-up sprayer. Then spray the premixed solution evenly on the bilge. Keep the area moist for 24 hours or until it is clean.
Yes! You can use Marine Digest-It in metal marine holding tanks, provided that the tank hasn’t been damaged by water. In other words, if your tank can safely hold water, Marine Digest-It will work in the tank. Marine Digest-It contains no harsh chemicals that could potentially harm the metal of your holding tank.
Yes! Unique RV Toilet Cleaner works wonderfully in Marine heads. It will cause no issues in your holding tank nor damage your head itself. In fact, RV Toilet Cleaner will help to facilitate the growth of beneficial bacteria colonies in your tank, which will keep waste liquified and odors at bay.
Marine Digest-It, though it is not intended for use in shower lines, is a great solution for cleaning drain / sanitation lines and sumps that can become clogged or run slowly due to backups from soap, shampoos, greases, and oils.
Please Note: Marine Digest-It will not eat hair. However, the reason why hair clogs drains is because grease or grime from soaps, shampoos, and body oils, collects along the walls of drain lines and catches hair as it runs down the pipe, thus clogging the line. Marine Digest-It rapidly digests the contaminates on the pipe walls eliminating the debris, leaving nothing for the hair to cling to so it can simply wash away.
Often a line will run slowly because hair has attached itself to the drain cover, plunger, or stopper in your sink or tub. Simply pull the hair off to allow the water to drain normally.
If there is still no sign of improvement, the hair may need to be removed manually. We recommend using a small drain cleaning tool to remove large amounts of hair, like this one. Once the hair is removed, the bacteria will be able to eat away anything that the hair might stick to.
Absolutely! Marine Digest-It's highly concentrated, non-toxic, blend of safe bacteria contain no harsh chemicals or scary additives. That means no possibility of harm to your family, your pets, or the environment.