General Category - Pearson Owners and Enthusiasts > Cruising

Type I MSD

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Eddy:
This is several months old but wanted to share as I have the lectrasan on my boat. For this to work properly in anything other than water with a high salinity like actual seawater you'll have to inject a brine solution to get enough salt for it to work correctly. If you don't have enough salt not only does it not sanitize the waste it will cause the electrode pack to fail. This is a hassle as it takes quite a bit of brine in the Chesapeake.
I'm considering the airhead to replace this .. has anyone used a composting head that could provide some insight on how well they actually work? I've spoken to one person who bought a boat with one installed and they weren't happy with it and ended up replacing with a holding tank arrangement. It was a large catamaran and they were a family of 4 with frequent guests so not really a fair test with that many people on board.

Dolce_Vita:
Sorry the promised update on this took so long.  We've been on our trip down the ICW since mid October.  Just got into Ft Pierce FL.

I managed to sandwich the macerator pump into the narrow space between the aft side of the holding tank and the plywood-backed liner wall. Doing this required removing the pump head and rotating it 180 degrees to get the 1" outlet barb pointing down.

By tee-ing the pump's output into the line to discharge seacock, and teeing it's input off of the line to the deck pumpout, I got a system that requires no additional Y valve.  As long as the deck cap is in place, the pump develope plenty of suction to empty the tank.  As long as the existing Y-valve is set to direct the toilet into the holding tank, the pump's outlet is directed to the thru-hull.  And it does not interfere with normal use of the deck pumpout.

I also drilled a 1" hole thru the liner wall to allow access to the slotted shaft on the end of the motor (protected by a removable dust cap) for backing the shaft in case of a jam.  A white plastic plug from Lowes finished off the hole neatly.

MangoCats:
I have a 303 with a smallish vinyl bag holding tank under the starboard settee...  I don't know if the "soft tanks" would get you any more flexibility with respect to overall holding capacity, but they do seem like a relatively easy install (easy for me to say, my boat came with them pre-installed, and a gripe from the previous owner about one he had to replace because it was leaking...)

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