Marine Digest-It Holding Tank Treatment

Size: 32 oz.

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Wave Goodbye To Sludge Buildup, Odors, and Misreading Sensors

Powered By The Most Advanced Bacteria & Enzyme Formula Available

  • Digests solid waste and residual sludge in holding tanks
  • Helps remove more waste with every pump out
  • Eliminates foul toilet and tank odors
  • Cleans and maintains tank sensors and level gauges
  • Treats black, gray, and galley tanks
  • Digests all brands of toilet paper
  • Reverse years of waste and sludge buildup
  • Formaldehyde-free formula
  • Works in salt water
  • Proudly made in the USA
  • Formulated with trust - contains no hidden chemicals
  • Free Shipping On Orders Over $40

The Problem

Over time sludge can quietly build up inside your holding tank causing odors, reduced tank capacity, and inaccurate sensor readings. Toilet odors and tank clogs are the last thing you, or your guests, want to deal with. You need a simple solution that solves these problems at their core so you can spend less time worrying about your holding tanks and more time enjoying your boat.


The Solution

Unique Marine Digest-It’s advanced blend of bacteria and enzymes is specially designed to break down holding tank sludge inside your boat’s holding tank, allowing you to effectively pump out the entirety of the waste inside your tank - leaving behind no sludge or residue. Not only will this help keep your tanks free from sludge, extending the time between pump outs, Marine Digest-It will also eliminate foul toilet odors that can ruin time spent on your boat. Marine Digest-It not only eliminates sludge and odors, it also cleans and maintains tank sensors, allowing you to know exactly what your levels are inside your tank.

Keep Your Boat's Holding Tanks Clean and Clear


The Science

Marine Digest-It uses a proprietary blend of bacteria and enzymes to do the work of breaking down solid waste inside your tank and eliminating odors. The sludge inside your holding tanks is a perfect food source for the bacteria that powers Marine Digest-It. Once the bacteria encounters the sludge (feces, urine, and toilet paper), it becomes active and begins to eat. As the bacteria works, it produces enzymes. These enzymes help break the waste down into more easily digestible portions for the bacteria so they can completely eat and digest the waste, leaving you with sludge-free, fresh smelling tanks.

The bacteria-enzyme blend in Marine Digest-It is also specially formulated to force out the bad, odor-creating bacteria (anaerobic) and replace it with good bacteria (aerobic) so sewer odors are eliminated at their source without using any masking agents or strong fragrances.


Universal Product Identifiers

Marine Digest-It 32 oz.

SKU 441
UPC 736683000074
Size 32 oz.

Marine Digest-It 128 oz.

SKU 442
UPC 736683000203
Size 128 oz.


Safety Information

Learn more about this product, including SDS, here.


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What Does The Number On The Back Of The Package Mean?


The Unique Method Product Categories The Unique Method Product Categories

Unique Camping + Marine holding tank treatments make it easy for you to maintain clean, clog- and odor-free holding tanks. The Unique Method is a proven holding tank treatment process that was developed through in-depth conversations with campers and virtually eliminates all problematic tank odors, prevents clogs and pyramid plugs, and ensures that tank sensors continue to read properly. Just refer to the back of the bottle for instructions.

Overall rating: 4.712329 / 5 from 73 reviews.

AI Generated Review Summary

Marine Digest-It Holding Tank Treatment effectively reduces sludge buildup and odors in holding tanks, praised for its long-term performance and excellent customer service. It cleans and maintains tank sensors, ensuring accurate readings and a fresh-smelling tank.

Summary topics

  • Odor Elimination: 31%
  • Customer Service: 13%
  • Tank Treatment Effectiveness: 19%

Review topics: [].

Review highlights

  • "The result is clean tanks, clean river and a happy owner."Kim H.
  • "A minor inconvenience for no tank odors and no sludge buildup."Alan
  • "No smells, longer between pumps, no clogs!!"Pat A.

Reviews

Works a charm!

"I've been using the Marine version of Digest-It since it came out (used the RV version before that). When used as directed, no odors and no pump-out issues despite living aboard and using the heads regularly. A great product and seems to be effective even when we're on a salt water flush."

Alan L. (5/5)

Not Nearly as Good as Advertised

"Looked good, liked the reviews but unfortunately it didn't do what it is advertised to do fully. Have used for several months with each pump out and flush to no avail. Still have that unpleasant Holding Tank Odor =("

Lloyd (2/5)

Worthless product

"Absolutely worthless, does not stop any bad smells at all."

Noyb (1/5)

Hooray! Digest-It for Marine Tanks.

"Very pleased to see a salt-water-compatible Digest-It! Switched over from the freshwater version over a month ago and no change in its effectiveness against odors and sludge. Nice to have a quality tank treatment that will work regardless of whether we're on fresh or salt flush. The only negative is that this formulation is much "thinner" than the freshwater version. When shaken before use, it tends to "foam" in the bottle and then dribbles down the side of the bottle when poured. A minor inconvenience at worst."

Alan (5/5)

"Great stuff! Glad there's now a formulation that works in both salt and fresh tanks. Only downside is that it foams when shaken. Makes it difficult to be sure everything is well mixed before dispensing. A minor inconvenience for no tank odors and no sludge buildup."

Alan (5/5)

Keeping my Boat’s Black Water System Uniquely Clean!

"I only clean the toilets in our Back Cove 41 with Scrub-It Toilet Bowl Cleaner, pour Marine Digest-It in the black water tank after every pump out and Clean-It Black Tank Deep Cleaner 2X/year - generally when the boat will be sitting for 2-3 weeks - to give the tank a good clean out. I have not had any issues with our black water system. I rely on my Unique Marine enzymes!"

Sharon S. (5/5)

Great Product! Tried the Orange Pods and I'm back!

"We've been using Marine Digest-It for several years and it keeps our tanks quite clean and easy to pump-out. Recently we were on a trip and I ran out so bought a container of the Orange Citrus-Pods at Wally-World. I though that they would be great, much easier than measuring out liquid each time. The first few treatments were great, just drop in a pod and it said that it would make the poo smell like oranges! After about a month, I opened the container, and found that I had a mound of orange powder intermixed with globs of goo. Dampness had gotten in and dissolved the pod covers. What a mess! Also when pumping out I noticed that I had a lot of undissolved paper coming out of the tank that I didn't have with the Marine Digest-it. As for making the poo smell like oranges? Not so much! It still smelled like poo! So, back to Marine Digest-it! I whish that Unique would come out with an "Ultra-Concentrate" version in the self measuring bottle for Marine Digest-It like they have for the RV version. It would make using it much easier and reduce storage space on the boat. Great Product, highly recommended!"

Tom L. (5/5)

Marine digest- it holding tank treatment

"Works very well! My tank gets flushed out every time it’s full and still had a smell every time we flushed. We have a vacuum flush system. We’ve always used the blue stuff (no names) it was ok but after the first flush out with Marine digest wow it was really cleaning it out! After the second flushing the smell total went away! Since then and it’s been only a couple of weeks it still seems to be working! I recommend this 100% ! No photos who wants to see a toilet 😳"

matzo j. (5/5)

Actually works!

"I used to use KO, but this is SO much better."

Amanda S. (5/5)

Houseboat

"Have been using your products for years"

Brenda B. (5/5)

Q&A

What is the shelf life of the product?
Hi and thank you for reaching out. Great question! Our products carry a two year shelf life, but the reality is, they will last much longer. So, as long as the product doesn’t freeze while you have it in storage, you should be totally fine using it after an extended period of time! If you have any more questions or need further guidance, feel free to reach out to us here or through our support email at support@uniquemm.com! We're always happy to help! Thank you and happy camping! :D

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