Oh boy. I would find someone experienced in the marina next to you and ask them to go over your boats systems with you.
3. How do I tell if all my seacocks are working?close them and open raw water
strainer...clean strainer. Then crack open seacock for a second, water should quickly flood strainer, close seacock ,water should stop, if not hurredly close strainer and schedule seacock replacement next haulout.
2.Is the holding tank
vent filter possibly causing the bulging waste tank? Yes. Have pump out guy backflush vents during next pumpout, mine uses something that looks like a toilet plunger hooked to a garden hose, open a head
flush valve during this procedure to prevent over pressuring holding tank. If a flush valve is leaking in one of the heads this could cause both symtoms you are experiencing.
1. You got a leak or bad valve somewhere, are you hooked up to shore water? If so disconnect it, I never use my shore water connection, even when living aboard
. If it leaks
it will sink your boat. Fill up the fresh water tank
every few days instead. It will keep the water fresh in the tank.
Then start at the tank, follow lines to pump, the fresh water tank should never be under pressure, if it is, (shore water hooked up?, bad pump?). Check pump pressure and shutoff switch, check entire system for leaks
up to each fawcet. Good Luck
Welcome to boat ownership
You might get a small amount of expension in the tanks if the vents are clogged as winter turns to summer, Around here they are a favorite spot for wasp nests, the holding tank vent will clog with dried toilet paper. PS I'm not kidding about shore water.