Izmack wrote:
We have an old Sealand 911-M28 and are going to "upgrade" it to the
711-M28. Through reading this group, I understand that one can install
an inline pump to a secondary (larger) holding tank and have the
pumpout rerouted to the secondary tank. Does anyone know how I can get
more information on doing this?

It's simple: reroute the pumpout line to the larger tank...install a
macerator in that line to transfer the waste.

The 711-M28 Marine Traveler tank holds 9.5 gallons...a macerator pump
moves 12 gal/minute. So I strongly recomend that the second tank be 20
gallons, which would hold two Traveler tankfuls. If it's smaller than 20
gals, you risk overflowing it...any larger (unless you go for 30
gallons, you either lose the additional capacity or risk overflowing it.


We have a 1988 Trojan F32 that my husband and I use it for cruising the
Chesapeake and are tired of pumping out every 3 days. Also, the
solution needs to be an economical one. The secondary holding tank in
the V-berth seems perfect. Any feedback from those who have done this
would be welcome!

My last boat was a 1980 F32 that bought from an estate and
restored...they're wonderful boats! The v-berth is the ONLY good
location on that boat. Any other location that has room for it is too
far from the head. Route the hose from the Traveler to the tank under
the portside hanging locker (the sole in the locker comes out by just
removing some screws)--which is also a great place to put the
macerater--and then behind the drawers. Run the vent off the tank to a
new vent fitting near the bow...don't bring it back to the existing one
behind the vanity in the head. And make the vent 1".

Your best source for a tank is Ronco Plastics
http://www.ronco-plastics.com They make TOP quality tanks for a very
reasonable price, and have more than 400 shapes and sizes. And they
install fittings in the sizes and locations specified by the customer
when they make the tank.

If you need more help, you're welcome to email me: address is my
(dot)name(at)gmail(dot)com.

--
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/books...ku=90&cat=1304