Thread Tools Display Modes
Old 06-24-2014, 07:20 AM   #11
Site Team - Lou
Herk7769's Avatar
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,367
Originally Posted by LittlePM View Post
I have been told by many campers for years FIRST you NEVER leave your tanks open the fumes can cause health problems.
I also keep my valves closed (both gray and black) dumping only when full (or we are leaving hookups) because leaving them open allows the solids in both type of tanks time to dry out and become harder to flush out.

You should never "smell" tank odors inside the camper even with the valves open since the tanks are vented to the roof and the water above the toilet valve and water in the gray traps keeps fumes from entering the camper.

Fumes in the camper at any time (valves open or closed) means you should find out where the leak is. Many times "sloshing" during travel will empty the shower trap and allow (stinky) gray tank fumes to enter via the shower drain. Simply add a cup of water to the shower pan to stop the smell.

Also using the vent fan when using the "facility" can draw odors (valve open or closed) up through the toilet when flushing with a nearly full tank. Shut off the fan when flushing and turn it back on when you are done.


Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
Herk7769 is offline   Reply With Quote
Old 06-24-2014, 07:26 AM   #12
Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,316
Just dumping the grey tanks can suck the P traps dry. When you open a dump valve, it simply overcomes the roof vents and sucks the water out of the traps. Herk is correct, just pour a cup of water in each drain.

OldCoot is offline   Reply With Quote
Old 06-24-2014, 07:49 AM   #13
Senior Member
LittlePM's Avatar
Join Date: Feb 2014
Location: In the Heart of Dixie
Posts: 1,815
Thank you, I didn't know to add the water back to the drains to stop the smell, we do have that after we dump sometimes.
Pennie and Chuck, Mandi and Polly (the little dogs)
Your Hosts for BamaGanza 2017
2014 Georgetown XL378, 2013 Honda CR-V AWD Toad
Days Camped 2014 - 83, 2015 - 56, 2016 - 58, 2017 - 86

The Home of the FREE because of the BRAVE
LittlePM is offline   Reply With Quote
Old 06-24-2014, 07:57 AM   #14
Site Team
Kaadk's Avatar
Join Date: Apr 2013
Posts: 4,207
Originally Posted by Herk7769 View Post
I do a "septic" cleaning once a year when I winterize using RV-Digest-It with a full tank of water and a 7 day wait.

I need to add that to my winterizing process. I thought I did a good job cleaning the tanks last year since I was at it for a couple of hours filling, dumping, flushing, repeat, until dumping a full tank appeared crystal clear. During the spring sanitize I dumped most of the FW bleach into the black tank, drove it to the campground... and was surprised I was still getting TP and stuff flushing out despite my cleaning efforts in the fall.

There's no use crying over spilt milk, unless it's on your keyboard.
Kaadk is offline   Reply With Quote

black, black tank, light, tank

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:10 PM.