<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
<HTML>
<HEAD>
<META content=text/html;charset=iso-8859-1 http-equiv=Content-Type>
<META content='"MSHTML 4.72.3511.1300"' name=GENERATOR>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT color=#000000 size=2>Just spending some time reading the manuals that
came with my boat. One of these is from Monogram Industries of Arizona
(probably out of business). The product they made was a 7 gallon <U><FONT
color=#000000 face=Arial size=3>recirculating</FONT></U> holding tank. I
checked this tank out thoroughly after buying the boat but didn't completely
understand it (still don't). According to the instructions you give the
tank an initial charge of 3 gallons and add a compound produced by Monogram.
There is no fresh water inlet involved at the head (I have the schematic). The
only fresh water is added from the deck inlet which is connected indirectly
through the head plumbing. The material in the tank is recirculated
through the head. This appeared to be working last fall, but there was a
lot of fine fecal matter, etc. in the liquid although it did not smell (it just
looked awful). I assume that the waste is being treated via bacteria or
enzymes. I also assume that the treated water is then recirculated through
the head to flush out the next load. The manual does not actually tell you
the theory or practice. It just gives you the operating
instructions. They say that the system should be pumped and recharged
every 30 flushes or so. There appears to be benefits and pitfalls to this
system. The tank is under the port berth and is connected to a Junior 51
head. The valves on the head are frozen so I will replace them in the
spring with proper valves. Of course the head does have a fresh water
inlet but it wouldn't take long for this tank to fill using constant fresh
water. Does anyone have any knowledge of this kind of system.
</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV>
<DIV><FONT size=2>Peter Hay Rubicon #384</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV></BODY></HTML>