Jump to content
brucebollert

Black Tank Maintenance

Recommended Posts

I'm a newbie with a 25' Sun Seeker MBS.  I was told when I bought the motorhome that I should wait until black tank is 3/4 full before dumping.  I have been out a couple of times and the tank is now 1/3 full.  The coach will now sit for a couple of weeks.  Should I wait until the tank gets 3/4 full or should I dump it now?  I'm sure this topic has been discussed somewhere on the forum.

Share this post


Link to post
Share on other sites

I agree.  And, best to add some water to the tank (tank flush if you have one or even hose into the toilet.

Like Ross, I would not store a coach, particularly this time of year with 1/3 full black tank.

Share this post


Link to post
Share on other sites

There are several different things to consider in your particular instance. Waiting until the black tank is 3/4 full in good advice, in your circumstances you might be slowly building a pyramid of solids in the tank when it is allowed to sit partially full-unused for weeks/months. You will flush the tank better if you fill the tank with water to 3/4 then dump. After dumping add  a few gallons of water so it's ready for your next outing, and the seals stay wet.

Share this post


Link to post
Share on other sites

In 100 plus degrees heat?? I would definitely dump the tanks...you can add water later or soon after, but, what's the point in waiting..  add some water to the black tank by just flushing the toilet or adding packets for sanitizing and fresh smelling ingredients... camping world sells lots of these.. handy.

Share this post


Link to post
Share on other sites

When I'm in a campground, I dump mine between half to 3/4 full.  Gray at 3/4+!  I like having full gray when I dump Black...On the road my tanks are empty, except for about 50 gallons in fresh water tank and when I park in my garage, I have empty tanks and full fuel tank!

I don't throw any Camping World packets in my black tank !   

Share this post


Link to post
Share on other sites

One thing that might help is a Holding Tank Flush. If you have access to the side of your tank you can install a flush attachment to your tank. Then when you are home you can drain your tank and flush it completely. They can be purchased from most RV supply stores.

 Herman

Share this post


Link to post
Share on other sites
23 minutes ago, brucebollert said:

Thanks all for your advise.  I'm filling the tank 3/4 with water and heading to a dump station..

I would install a clear section on the dump hose so you can see when it is flushed clean.  I am at a campground in Mi right now and had to change my dump valve which was 15 years old.  It took me 6 flushings of 1/2 full of fresh water to get the water in the dump hose perfectly clear before I disassembled the valve.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...