Tank guage lies

Dave H M wrote:
I get it now, GREY GREY. I should have realized that from your first post. :h :W

When I read waste, I'm thinking human waste, not shower water.

Usually the black tank sensors are the ones people have trouble with.

I would check for a possible electrical issue.

Cleaning the grey tank sensors is going to be a bit tougher.

I get it now, GREY GREY. I should have realized that from your first post. :h :W

We ignore them - don't even look at them. Can tell when tanks need to be emptied.

Sounds good. I have ordered it from Amazon. THANK YOU.

ice2fire wrote:
When I empty the waste water tank, the guage indicates it is still full. Obviously the contacts inside the tank have got gummed up ? Our trailer never moves, it is on a fixed site. What can I do ?

An occasional dose of Walex Commando is designed to address this issue and has always seemed to help my tank sensors read properly, 'though truthfully I've never paid much attention to them.

Done. Hmm ! $150 each. I'd need two of these. Unless..... I used just one for Black tank, and kept the grey valve always open, using block. When it came time to flush Black, remove block (easy), push button, black tank flushes. Open up hot water in kitchen, run it for a while to clean out outside sewer hose and Y junction. Push button. Black tank closes. Turn off kitchen tap. Replace block. Easy. Need to think about it for a while. Thanks. Never knew the remote ones existed !

I might use the manual ones plus block for a while to see how it works out.

Remote control ?? How ? Are there systems for this ? Thanks.

You could change your dump valve to be remotely operated. Just push the button when the sink backs up. Make the rest easier too.

Thanks for al the replies. I did mention in my first post that it was the waste water, i.e. grey water tank, i.e. NOT the BLACK tank, sensors that were not working, but it looks like people maybe read my posting too quickly !! This GREY water tank (K) is attached only to the kitchen sink, which of course, gets lots of waste water supply.

Whatever, I think we will fill this K grey water tank with hot water as much as possible, and then foaming RV tank cleaners like Tank Blaster or Commando. Also fill tank with water and CLR or Lime Away.

Up to now, I have flushed the K GREY tank when it was full, about twice a week, and after I have flushed the BLACK tank so as to clean the outside sewer pipe. The sewer lines from the K tank and the BLACK tank are joined under the trailer, with a flush gate attached to each tank.

We also have a separate sewer line from another GREY water tank (B) that has ONLY the bathroom sink and shower attached to it. I leave the "flush gate" open all the time on that. However, outside, close to the trailer, I have placed a 6" high block of wood underneath the sewer hose, thereby creating a U type drain. This works well and keeps the RV Park sewer lines smells at bay.

I could do the same with the K GREY tank, only keeping the "flush gate" to the BLACK tank closed. When I wanted to flush the BLACK tank, (which is not that often, two weeks even) I would close the "flush gate" to the K tank, fill up the K grey tank, remove the block under the sewer line, flush the BLACK tank, flush the K tank, close BLACK tank gate, replace block.

What a procedure !! But I don't think it's worth messing about with new sensors. And since I am elderly, getting down underneath the trailer to open and close gates is a pain. I'd rather not rely on a schedule, my DW (and myself) sometimes uses the kitchen sink a lot, sometimes not that frequently ! I could be draining the K tank unnecessarily.