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From: Keith (no email)
Date: Sun Aug 18 2002 - 19:09:33 EDT
FYI
-- __________________ Keith "When I was a kid my parents moved a lot - but I always found them." Rodney Dangerfield
attached mail follows:
Keith wrote:
> Thanks for the link. Have you ever heard of this?
No, but it's a very bad idea. The last thing your want to do in a
holding tank is add anything caustic!
>>My problem on Enjoue (an Allmand 35 PilotHouse
>>bought this spring) is past accumulation on the walls
>>of the 10 gal. poly tank. We are unable to see what
>>the level is in the tank, due to residue which has stuck
The simple solution would be a tank level monitor. However, a strong
solution of low suds detergent (Wisk is good) and water will take care
of the problem. Waste contains animal fats that can build up on the tank
walls and stain the plastic. Detergent emulsifies fats...so this will
clean out the tank, but any stain will remain and require at least a
couple of gallons of bleach in a 10 gallon tank (only 10 gallons on a
35' liveaboard? They must spend more time going back and forth to the
pumpout than cruising!) to remove:
Fill the tank about 2/3 full with it, then go out and spend a couple of
hours being rocked and rolled by wave and wake (if it were a planing
hull boat, I'd say go fast and zig zag a lot) so that the solution can
really slosh around in the tank. Let it stay in the tank for at least 24
hours...longer is better. Pump out and THOROUGHLY rinse out...then
re-treat with K.O. or Odorlos, whatever he's using.
As I said, it would be just as easy to install a tank level monitor. I
recommend the Snake River AcuGage...the sender goes on the outside of
the tank, so it never comes in contact with the contents. Best system on
the planet IMO. Check it out on their website at
http://www.snake-river.org.
> If you want an aerobic product, go straight to the source.
> You can get 35% lab grade hydrogen peroxide (H202)
> and dilute it to what suits your need.
> If you have metal tanks you probably shouldn't do this since
> it causes "oxidizing", but that extra oxegen molecule really wreaks havoc
> on anerobic bacteria. A strong solution will burn out everything in the
> tank.
Which is the last thing you want to do! The whole point of aerobic tank
maintenance is to work WITH the naturally occuring bacteria, not against
it. Besides, H2O2 will not emulsify grease, oil and fats.
Peggie Hall
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