I know this is an old thread but I'm faced with a partially finished head/holding tank installation I inherited from the previous owner. I have a holding tank and two thru-hulls with a vent. No toilet, diaphram pump, anti-siphon or y valves. I've been reading about composting heads, specifically the Natures head http://www.naturehead.net
I figure it would be nice to get rid of two holes in my boat and this system is basically a head and storage system all in one. I have a 25 foot boat I plan to liveaboard when I finish the refit and I would gain a lot of space under the v-berth where the tank and valves are.
Does anyone have any updated experience with these units?
They do seem expensive for what they are, basically a bucket with two compartments to separate solids and liquids with a hook up for a vent on the side. Thanks Brandon