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I dilute the blue about 4 to 1 so that I have about a pint of fluid. I do this so that I can be sure of getting each of the drain pipes well wet on the way to the tank
Grant, great info, thank you. I've already bombed the tank with blue (more than your suggested measures) but we've agreed to incorporate your method into our domestic routines (i.e. SWMBO will do it ).
John, didn't you like the blue smell then?
Carol, I've been on the roof and can't see anything resembling a vent stack - had one on the old Kontiki, but not here (I think?) Anyone else advise?
Dougie, The tanks must be vented somehow Euro vans just have a hole on the top of grey tanks as a vent:lol: It is common for US to have the vent tee into the black vent for convenience.
However, The black tank must be vented. and usually a black 1.5" abs pipe. If the black tank has no vent it is going to try and release build up of gas through the toilet seals, the valve seals do retain a bit of water don't they?
As you mentioned the smell can be coming from either tank suggests a common connection. Try keeping plugs in the sinks and shower to try and rule out venting back through the traps.
If the venting system is working and been designed and installed properly then there should be no need for chemicals at all.
Carol
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crazed witch
originally joined in 2004
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Have you by any chance washed water in which you have boiled eggs down the sink into the grey waste ?
We've only done it twice but believe me we never do it now. It's amazing how smelly just one pan full of apparently clean water can become in the tank.
G
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Our RV grey tank used to honk after 4 or 5 days. You got a few choices, roof vent cyclone thingy from your favorite RV parts dealer (www.starspangledspanner.com) and/or some bio magic. Black tank should be sealed when all the traps are shut. Maybe you got a blocked vent or dodgy seal somewhere? Same cyclone vent and bio magic can be used on black tank.
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Have you tried BioMagic? It will easily get rid of the grey tank smell. After each trip I pour an egg cup full down each drain and an extra one for the tank. Never bother putting the plugs in the sinks as not required. It will also cleanout the black tank on your RV and then you can get back to normal use.
Cheers
Alan
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I had a bad smell once i didnt realize it was my overalls i was working with pigs and it took me such a long time to realise it was my job that caused the smell. Have an outside shed now for dirty clothes.
Busty
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Euro vans just have a hole on the top of grey tanks as a vent:lol: It is common for US to have the vent tee into the black vent for convenience.
