My wife and I have a 2006 Carver 36MY
The owners manual diagram says there's (2) 25-gal waste tanks, but the specification sheet says 36-gal total?
It would appear to us that the aft tank "fills up" quicker than the salon tank under the galley storage area.

Anyone have a definitive answer to this ? are both tanks rally the same size, but in our case 18 gal rather than 25 gal? or are they staggered in size, due to our 36MY floorplan and that aft tank is smaller, possibly only 11 gals?

Our aft tank monitoring system always reads half full, even after pumping out. Is there a special tool to get the monitoring cap loose/off the tank so I can clean each rod? I have banged on the "tabs" but hesitate to strike harder in fear of breaking off one or more of the tabs.

Any insight to this would be much appreciated.
Cliff & Beth Mathison
Renton Wa.