We have had our boat for about 6 weeks and our pumpout toilet became blocked this morning; the macerator runs, the water goes down, but then when the power stops to the macerator the water flows back up again, along with whatever was in it. Nothing down there but very cheap TP and natural products, so we suspect some sort of TP blockage, but it appears to be after the macerator. We did a thorough pumpout just yesterday.
Any advice on how to clear? We are okay with advice that might shorten the lifespan of the pumpout, as we intend to rip the blasted thing out and replace it next week.