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- CLEANS & REFRESHES — Give your RV or boat holding tanks the clean they need with this treatment that breaks down waste and refreshes your tanks by leaving behind a pleasantly fragrant scent
- PREVENTATIVE TREATMENT — Avoid unnecessary clogs and residue buildup by regularly treating your tanks with this RV and boat-safe formula
- ECO-FRIENDLY — Made with 100% natural ingredients, the Flow Max holding tank treatment is formaldehyde-free, environmentally friendly and biodegradable
- SAFE TO USE — With no harsh chemicals, this formula is safe to use at campgrounds, at the lake and around your family
- MULTIPLE SIZES — This RV septic tank treatment is available in 8-ounce, 32-ounce and 64-ounce bottles, so you can choose the size that’s right for your lifestyle
Flow Max™ holding tank treatment is a must-have product for RV and boat owners! With a concentrated formula that breaks down waste and toilet paper, this product helps prevent clogging and residue buildup in your holding tanks. Flow Max RV and boat tank treatment cleans your tanks and sensors while also neutralizing harsh odors, leaving behind a fresh scent.
Our environmentally friendly and biodegradable formula is safe to use at campgrounds, marinas and around the family. It’s made from 100% natural ingredients and is formaldehyde free.
To keep your holding tanks looking clean and smelling fresh, use the Flow Max holding tank treatment regularly. For grey tanks, pour two ounces of RV tank treatment into the tank and take a drive to slosh around the solution. Drain it, then rinse using a flush valve. For black tanks, pour two ounces of this treatment into your toilet bowl with one gallon of water. Flush the toilet and let the treatment sit. Be sure to store all bottles between 50°F (10°C) and 105°F (40°C). Please note: Temperatures above 85°F (29°C) will not require additional treatment. Temperatures below prolonged 40°F (4°C) may require additional treatment. Holding tanks should be emptied weekly.
- For use in black and grey RV holding tanks and boat tanks
- Breaks down waste and toilet paper
- Prevents clogging and residue buildup
- Cleans and maintains holding tanks and sensors
- Neutralizes odors especially in hot weather
- 100% natural and formaldehyde-free
- Environmentally friendly and biodegradable
- Safe for campgrounds and marinas
- Concentrated liquid formula (2 oz. treats a 40 gal. tank)
- Fresh rain scent
- Made in the USA
| Scent | Fresh rain |
|---|---|
| Biodegradable | Yes |
| Width (inches) | 5 |
| Height (inches) | 5 |
| Length (inches) | 10 |
| Volume (ounces) | 64 |
| Formaldehyde free | Yes |
| Material composition | 100% natural ingredients |
| Physical weight (pounds) | 5 |
| Dimensional weight (pounds) | 1.51 |
| Concentrated liquid formula dosage (ounces per 40 gallon tank) | 2 |
- What types of tanks is the lippert flow max holding tank treatment suitable for? It is suitable for use in black and grey RV holding tanks and boat tanks.
- Is the lippert flow max holding tank treatment environmentally friendly? Yes, the treatment is made with 100% natural ingredients, is formaldehyde-free, environmentally friendly, and biodegradable.
- How often should i use the flow max holding tank treatment in my rv or boat? Holding tanks should be emptied weekly, and regular use of the treatment is recommended to keep tanks clean and smelling fresh.
- How much of the flow max treatment should i use for a 40-gallon tank? Use 2 ounces of the concentrated liquid formula to treat a 40-gallon tank.
- Does the lippert flow max holding tank treatment have a scent? Yes, it leaves behind a fresh rain scent after use.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.


