Hello Scott C, get ready to wash your boat, watch out for the N African sand cloud coming your way soon.
We have 2 12v Marine Elegance toilets fitted which we bought from SV24.de in Bremen and after 8 years they are still working perfect.
We only use 2 ply toilet paper and once a month we pour 2 litres of 14% vinegar down the toilet, pump until just visible and leave overnight, pump well the next morning.
The vinegar clears the calcium build up in the toilet and exit pipework.
p.s If you need to get any medic appointments or Covid jab use the site
www.doctolib.fr to make an appointment.