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Joeydrunk's avatar
Joeydrunk
Explorer
Jan 28, 2016

First time owner-Black water tank clogged....help!

Hello all,I just got a 1990 5th wheel trailer, first time ever experience with one. Just moved into a trailer park a month ago and when I did I left both my valves open thinking that everything would ...
Pipeman's avatar
Pipeman
Explorer
Jan 30, 2016
Joeydrunk, pour a whole bottle in there & let it sit as long as possible. I use it all the time now. It's a couple of ounces for 40 gallon tanks if I remember correctly. If you don't have to use the toilet for a few days let it sit & see what happens.

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