Porta-Potty MSD pump out

[Trip72]

First time with a boat that has a head. Before I start, I have a #1 rule only on the boat, we are day trippers.

I have a 2.5 gallon tank, and the kid at the dock was pumping this thing for 15 minutes. I kept checking the level (opened up and looked in the waste tank), and it wouldn't pump out everything. Still a layer of liquid on the bottom. Is this normal for these models, or should I replace it?

This boat is a 2006, are there better model MSD toilets on the market these days?

Trip

 

[alldodge]

Don't know of which model you have but most have a 1 to 1 1/4 ID hose doing into the side of the tank. So during pumping out it will never get all of it out, because it will start sucking air

 

[tpenfield]

+1 ^^^ you will have a small amount of waste left in the tank. Those pump-outs can only take so much sh__

 

[Blind Date]

My 23' Larson cuddy had a porta potty w/pumpout. I'd take a hose at the dock and add fresh water through the toilet a couple of times while pumping. That would get it pretty clean. Like others have already said it will not pump completely dry by nature of the design. Add a little chemical and your good to go.

 

[Trip72]

All makes sense. Thanks for the input.