RV.Net Open Roads Forum: Black Water Tank Reads Full All The Time

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 > Black Water Tank Reads Full All The Time

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mr. ed

Amarillo, Texas

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Joined: 02/06/2002

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Posted: 05/08/02 01:11pm Link  |  Print  |  Notify Moderator

Dave, if for some reason you can't get them clean there is a way to tell if your tank is getting full. When you flush, you'll note that the last bit of liquid will bubble upwards, indicating trapped air. You are probably good for a few more flushes after this. It's worked for me over the years...my sensors haven't worked for a long time.

Mr. Ed

TexasTiger

Houston,Texas USA!

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Joined: 08/21/2001

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Posted: 05/08/02 02:25pm Link  |  Print  |  Notify Moderator

Dave,

Tried the canned chemical in both tanks and followed instructions. No change at all other than I was out about $12.

TexasTiger

ted white

Hydeville, Vermont

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Joined: 12/10/2000

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Posted: 05/08/02 08:34pm Link  |  Print  |  Notify Moderator

An RV manufacturers rep recommended Dawn dish detergent to me and it worked like a champ! Only Dawn will do however! He suggested putting one-half cup into the tank, fill with water and drive to your next location. Leaving the brew in the tank for a fewdays won't hurt anything and allows the contacts to soak clean. I use it each day I'm traveling and then dump the tank at the next stop. I tried the crystals that are sold for contact cleaning at Camping World but they weren't effective. The ice deal is too much work. Dawn is simple and did the trick for me. Good luck!


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