Bummer...I miss direct overboard discharge. :-(.

Glenn.

"Peggie Hall" wrote in message
...
Glenn (s/v Seawing) wrote:
Did I read that correctly...urine will destroy an aluminum holding tank?

Yep. It'll destroy ANY metal holding tank, even 316 stainless.

Bummer...my Father just had one made for his trawler. Any way to prevent
this?

Nope. But it's not gonna suddenly disintegrate. The average lifespan of
any metal waste tank is about 10 years. Typically, it'll start to leak at
a weld in seam or fitting within about 2 years...and turn into a colander
in about 10 years.

So you might want to tell him not to panic...it'll be ok for the next few
years. Just keep an eye--and his nose--on it. And tell him not to bother
repairing the first leak...'cuz the first one is always ONLY the FIRST
one. The time to replace it with a good quality thick walled plastic tank
is after it springs te first leak. Till then, he can relax.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://shop.sailboatowners.com/boat_odors/