Struvite Removal from RV Tank with RYDLYME

Struvite Removal from RV Tank

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Struvite Removal from RV Tank with RYDLYME

Removing and descaling struvite from RV holding tanks using RYDLYME descaler involves several steps. Struvite, a mineral buildup often comprising magnesium, ammonia, and phosphate, can be challenging to remove, but with the right approach, it can be effectively dealt with.

How To Remove Struvite RYDLYME Before
How To Remove Struvite RYDLYME After

Here’s a detailed step-by-step guide:

Read the RYDLYME Instructions: Familiarize yourself with the safety and usage instructions of RYDLYME descaler.


Ensure that the RV holding tanks (both black and gray water tanks) are emptied at an approved dump station.Locate the access points to your RV’s holding tanks. This might involve removing panels or covers.

Mixing the Solution

Prepare the RYDLYME Solution: Follow the instructions on the RYDLYME container for the correct water-to-descaler ratio. Typically, RYDLYME is used at a 1:1 ratio with water, but this can vary.

Fill the Tanks: Pour the mixed solution into the holding tanks. You can do this through the toilet for the black water tank and down the drains for the gray water tank.


Let it Soak: Allow the solution to sit in the tanks for the recommended amount of time, which is usually a few hours. This duration may vary depending on the severity of the struvite buildup.

Agitation (Recommended)

Agitate if Necessary: For severe cases, driving the RV around can help agitate the solution inside the tanks, improving the descaling process.

Flushing the Tanks

Flush the Tanks: After the soaking period, flush the tanks thoroughly with clean water. This can be done by filling the tanks with water and then draining them again. Repeat this process several times to ensure all remnants of the descaler and loosened struvite are removed.

Inspection and Maintenance

Inspect the Tanks: If possible, inspect the tanks for any remaining struvite buildup. You may need a flashlight and a mirror tool for this.

Repeat if Necessary: If struvite deposits are still present, you might need to repeat the descaling process.

Finishing Up

Dispose of Waste Properly: Ensure that all waste water from this process is disposed of at an approved RV waste disposal facility.

Rinse and Dry Tools: Rinse any tools or equipment used, including hoses and funnels, and allow them to dry.

Regular Maintenance

Regular Maintenance: To prevent future struvite buildup, regularly maintain and clean your RV holding tanks. Consider using tank treatments and performing regular flushes with water.


Check Compatibility: Make sure RYDLYME is compatible with your RV’s tank materials.

Follow Local Regulations: Always adhere to local regulations regarding chemical disposal and RV maintenance.


Click here to download as a pdf.



  • Biodegradable
  • Dissolves 2.2 lbs of scale per gallon of RYDLYME
  • NSF/ANSI 60 certified
  • Non-hazardous and safe for personnel

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