I just bought oxalic powder at my local hardware store. To clean the bottom of
my boat, what proportions due I mix it.
Frank

"SASIINC" wrote
I just bought oxalic powder at my local hardware store. To
clean the bottom of my boat, what proportions due I mix it.

You probably ought to start out with what it says on the package to use for
normal wood cleaning. The kind I buy comes in a little tub that holds about
a pint or so. I mix about half the container with about a gallon and a half
of water in a garden sprayer. It's pretty forgiving, so I just mix by trial
and error. If I mix it a little too weak, it doesn't remove stains very
well. (I spray a spot and if it doesn't start looking clean within a minute
or so, I declare the mix too weak.) If I mix it a little too strong, it
doesn't do any harm, but it doesn't do any better job than an optimum mix,
so I try to work up from a weak mix so I'm not wasting the stuff. Once I
decide the mix is close enough I squirt it on the hull, let it do its stuff
for 5-10 minutes, then rinse thoroughly with the garden hose. Then I use
soap and water to scrub off the stuff that OA can't cut, and if there's
still stains left I repeat the OA treatment. Oh, and I don't wear any
protective gear, (sorry Harry) but I'm not claiming that's a smart thing to
do.

which cost you $4.95, and most of which you are going to throw away anyway.

who cares.

mix the powder in water until it doesn't mix anymore, and then add a bit
more
water. done.

A *huge* waste of powder!

John H

On the 'PocoLoco' out of Deale, MD,
on the beautiful Chesapeake Bay!

There are 10 kinds of people in the world,
those who can do binary and those who can't!

To everybody who answered my question, Thank You,
Frank