Logo Thetford

Aqua MAX® Liquid

Enzyme-based holding tank treatment for RV and Marine

Find your dealer
Home Support Aqua MAX® Liquid

Aqua MAX® Liquid
Holding Tank Treatment

  • Breaks down and liquefies waste and toilet paper
  • Eliminates offensive odors coming from holding tanks
  • Comes in bottles with child-resistant caps
  • Enzymes optimized for MAX performance
  • Available in 128-oz and 64-oz jugs and 32-oz and 6 x 8-oz bottles
  • Spring Showers and Summer Cypress scents
  • Easy dosing, 8-oz treats a 40-gal holding tank

Frequently Asked Questions

Cleaning and maintenance

Yes it is possible for holding tank contents to freeze. Use RV antifreeze in both the black and grey water tanks. It is compatible with all Thetford holding tank products.

Empty your waste-holding tank every 3 – 5 days (depending on the waste-holding tank additive you use). Extremely hot weather and longer retention time may require additional treatment.

Various problems may cause improper level sensor readings. Not all sensor problems can be corrected by the use of LGC. LGC restores level sensors that fail due to tissue and sludge build up.

Enzymes accelerate the natural breakdown of waste and toilet paper in the holding tank to reduce the malodors and prevent clogging during discharge.

Yes, you can add more than the recommended dose of 8-oz per 40 gallons of holding tank capacity. The products cannot harm a treatment system.

The biological and enzyme ingredients in Aqua MAX® accelerate the natural breakdown of waste and toilet paper in the holding tanks to reduce the malodors. The fragrance in the product assists to mask any remaining odors.

When the level indicator shows full.

Replace the tank.

How to

The vent button releases air pressure from the waste holding tank, allowing for a smoother discharge of the tank’s contents.

It’s a matter of personal preference – based on what you’re looking for:

Aqua-Kem® is a fast-acting, 2-in-1 product that deodorizes and breaks down waste, even in extreme temperatures.

AQUAbio® is a fast-acting Formaldehyde- and Bronopol-free deodorant and waste digester, and comes with a fresh citrus scent. Available in 3 different forms:

AquaMAX® is a enzyme-based, Formaldehyde- and Bronopol-free deodorant and waste digester. Available in 3 different forms:

Campa-Fresh® is a enzyme-based, Formaldehyde- and Bronopol-free holding tank treatment. Available in 3 different forms:

Waste treatments

RV toilets use a small amount of water during flushing

  • Only 1 qt of water is used for flushing, opposed to 1.6 gallons used by a home toilet

Holding tank holds waste for several days – it’s not a mini septic tank

Major challenges:
  • Deodorizing the RV waste holding tank
  • Keeping the holding tank clean
  • Treating super-concentrated waste