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Thanks all. I measured and my vented loop was close to the recommended height above the water line. All good there. I ended up taking the toilet away from the wall and having a look. The 1.5" duckbill valve in the hose was old and not closing well, so I replaced that. I also wiped off the top...

Yes, my thruhulls are below the water line. My toilet that is below the water line does run up above the water line to a vented loop above the water line, but it is only just above the water line. Is it necessary to be "well above the water line"? Also, I think that vent is usually screwed...

One toilet (which is below the water line) has a rise in its hose briefly above the water line. One toilet (which is above the water line) does not have a rise. Are you suggesting a loop (or what I'm calling a rise--same thing right?) might help or might be the source of the problem? Will PS...

Thanks Peggie, I flush with fresh water. The holding tank is bypassed, so it all goes straight out the seacocks. Perhaps that is why we get bubbling: Without a holding tank involved, there is no vent involved, so the only place to air to enter the hose is from the toilet bowl? If this makes...

The only place you can still get gas for less than $2....

Dear Peggy (or others), I recently had someone replace all my sanitation hoses (and most of the grey water hoses too) with your favorite saniflex hoses. The boat smells great. Thanks! But, two out of three heads (Dometic 8700 Masterflushes) started bubbling a lot a few seconds after flush...

Thank you. I don’t want to use steel wire as I worry about noise (as you say) and tearing up the side of my boat. Nylon is too stretchy. That leaves two options: double braided polyester or Dyneema. I’m going to hang them 15 feet under water now to avoid any chance of them swinging up...

Dear all, I finally got around to ordering five custom flopper stoppers for my 60ft house boat (2 going on the stern, 2 mid way up before the hull narrows, and 1 off the bow). They will be tied to (sturdy) cleats. No room for booms where I'm parked. They will be upside down steel pyramids with...

Seperate question on septic tank cleaning/storage: I have a septic tank that I've cleaned with a pressure washer as best I can (the ice and rocking trick is not an option for my immobile boat). All that is left is (a) stuff stuck on the walls that is so hard it holds up to a pressure washer...

Ok, some raritan CP has been ordered. Two questions: 1) Is it fine to just pour down the drain, with excess running into the sea. Or do I need to stick a cork in the outport, ad 2-3oz of this stuff plus enough water to fill up the hose to the drain (btw, at your recommendation, I've replaced as...

Does Odorlos work just as well for this purpose?

Thanks Peggie. Replacing the duckbills did the trick. I now have an empty tank. Well, mostly empty. Still have a lot of sludge to get out. Going to take a power washer to it when I get a chance (with a towel over the point of entry so it doesn't spray back out!).

Thanks Peggie. A couple of duckbill valves are in the mail. I’ll try that first.

I also have a septic tank discharge problem. I have a new-to-me houseboat that kindly came with a 1/3 full septic tank, with contents that have been there for about four years (unbeknown to the previous owners). I'm trying to discharge it without luck. It has a Dometic TW discharge pump that...

Thanks. I think I'll use PVC whereever I can make it fit and sanitation hoses where it won't. For drain pipes (grey and black water), do you recommend using the standard PVC pipes (white here), or the thicker walled PVC pipes (grey here) designed for high-pressure applications? I suspect grey...

Hi Mermaid (and others), I take it your view is that whereever possible one should replace drain hoses (for grey and black water?) with PVC pipe. You say this is because it will not permeate odors. Is that the main reason for the swap? Does PVC pipe also last longer than the 10y avg life on a...

Thanks Peter. Very helpful. I take the point about making them small enough to lift and clean. Though, one appealing aspect of the Australian round bowl design is that there are no moving parts, and I suspect a rusted and barnacle covered bowl (3feet in diameter and 6-10feet under water with a...

Sorry, I got you mixed up with RobertLeatch, who used the Aussie round ones.

I assume you are talking about the flopstopper?

You also used the Australian round ones right? Did they not work as well as the magmas? Re your point about jerking, note that others on this chat have suggested solving that with weight and non-stretch lines (the opposite of the direction you took). Will

Robert, Do you still like these? One of my top candidates for my problem (big boat at mooring that basically never moves and must hang flopper stoppers off the cleats as no room to extend outrigger) is to have custom made versions of these Austrialian Ocean Torque "round bowl" stabilizers. I'm...

Simi 60, Have you been happy with your scaled-up Magma? If so, would you be willing to share the blueprints? I've also considered just getting the regular size magma's off the shelf and get lots of them (at least 4, and as many as 10--since I'm big and have to simply attach to my cleats)...

Thanks KnotYet, My initial concerns about these antiroll tanks are (1) expense, (2) they address roll but not pitch, and, most importantly, (3) it seems you have to get the design and water levels just right for your boat or else it could not only be ineffective but potentially...

Thanks Peter. I’m too packed in to do much out the sides, and I’m sure I’d violate some regulation if I built outward much. I’m tied up alongside one boat, and the boat on the other side seats but is usually about 10feet away. Building arms outward is just not an option. My beam is 6.4m/21ft...

Hi All, I'm on a 60ft houseboat, with three decks, and a fully equipped kitchen on the top deck (so we are heavy, and top heavy). We're moored permanently in a typhoon shelter. We don't get big waves, but we get enough of a rock from wind and/or passing boats to make my wife seasick sometimes...