E
Ed
I have a new boat (426 DS) and see a great advantage to keeping the holding tank in good shape. To that end it seems that a flush of the tank every few times it is pumped is in order and also to keep the vent line free a flush every now and then. My questions on flushing both of these items. Seems you should be able to fill the holding tank through the pump out fitting and it will vent through the vent line then pump the tank again. Unless I am missing something this sems straight forward -however, putting water down the vent line seems more complicated. I assume the pump out line runs to the bottom of the tank like a straw, so if I add water through the vent where will the displaced air vent? I have vacuflush heads so don't understand where the displaced air will go. What happens when you run water backwards into the tank through the vent line? Will it overflow out the pump out line? Thanks for any help here. Ed