3 posts / 0 new
Last post
pwohlwend
Offline
Joined: 11/3/20
Posts: 1
Muriatic acid to clean black water tank?

I saw a youTube video extolling the benefits of using muriatic acid diluted with water to clean out the black water tank of hard deposits created by urine and salt water mixing. Has anyone done this and what mix ratio did you use. How long did you let it sit before pumping out the mix of acid and water. 

Ray Taylor's picture
Ray Taylor
Offline
Joined: 9/11/19
Posts: 46

Many people, myself included consider Peggy Hall to be a credible expert on marine sanitation systems.   I highly recommend her book “Get Rid of Boat Odors”.   I covers most aspects of marine heads and maintenance.    

I don’t want to quote her but I recall her saying that Muriatic acid works but it is damaging to other parts of the system.   She recommends other more gentle methods.  

A quick google search offers tons of information.    The point is she is a respected industry professional.

https://shop.sailboatowners.com/prod.php?53615

https://forums.sailboatowners.com/threads/peggy-what-do-you-know-about-un-chloric.179907/

Catboat Willy's picture
Catboat Willy
Offline
Joined: 12/22/14
Posts: 334

In my opinion,Hydrochloric acid or muriatic acid at full strength is too strong for what you want to do and may damage other portions of the system. We've used this stuff called 'Septic Shock' with much success. Available at most hardware stores or Amazon.
Bill
 

Attachments
Log in or register to post comments