Coast Resorts Open Roads Forum: Black Tank only holds 1/2 to 1/3 of capacity
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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > Black Tank only holds 1/2 to 1/3 of capacity

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dave54

Northeast CA.

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Posted: 09/16/23 10:46pm Link  |  Quote  |  Print  |  Notify Moderator

Like the others noted, the sensors never work right. I will flush and clean the tank, and after about the second flush the sensors all read full again.

I can tell how full it is by the smell when I flush. When I detect the tell-tale odor, it's about 3/4 full and time to plan a dump.


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TexanSon

Bandera, TX

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Posted: 09/17/23 06:21am Link  |  Quote  |  Print  |  Notify Moderator

Keeping an eye on that. Added Unique to the tank Tuesday, dumped the tank on Friday and added more. Going to add some more this morning, and hopefully not have to dump the tank until at least tomorrow.

Thanks for the advice!


TexanSon
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TexanSon

Bandera, TX

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Posted: 09/20/23 08:43am Link  |  Quote  |  Print  |  Notify Moderator

Update, maybe final one for this thread.

First, thank you everybody for the advice. I've been using Unique in the tank for the last week. Dumped the tank last Friday, and then today, 5 days later. Based on limited visual inspection, the tank looks pretty good (for a black tank), and I think our problem, now, is just that we are slightly off kilter. I've got a few issues that I need to work out inside the trailer before I can even think about trying to get the level better, but I will definitely be high-siding the trailer when I can move it.

Again, thanks, everybody!

Vintage465

Prunedale CA.

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Posted: 09/20/23 09:13am Link  |  Quote  |  Print  |  Notify Moderator

Glad it looks like you're at the end of the issue. I've found a few things that affect black tank performance..........if you can call it that! 1st.....forget about the sensors, as mentioned, they're a sails pitch and will need constant cleaning from jet pressure to even be in the ball park. 2nd, make sure you figure out your "water to solids" ratio. Meaning make sure you're not concerned about conserving water that there is not enough water to help disolve/break-down solids and toilet paper. 3rd, make sure you're dumping on a reasonabley level or leaning to the dump side surface.


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ktmrfs

Portland, Oregon

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Posted: 09/20/23 01:19pm Link  |  Quote  |  Print  |  Notify Moderator

Vintage465 wrote:

Glad it looks like you're at the end of the issue. I've found a few things that affect black tank performance..........if you can call it that! 1st.....forget about the sensors, as mentioned, they're a sails pitch and will need constant cleaning from jet pressure to even be in the ball park. 2nd, make sure you figure out your "water to solids" ratio. Meaning make sure you're not concerned about conserving water that there is not enough water to help disolve/break-down solids and toilet paper. 3rd, make sure you're dumping on a reasonabley level or leaning to the dump side surface.


On the "water to solids". When we boondock, DW and I go about 7 days and the 32 gallon tank which uses the sealevel gauge system is about 50-60% full. Be careful with TP. the tank then get sloshed around till we either get home or to a dump station (usually home). Doing this it does require the use of the tank rinse system to clean the tank, but we've never had any other issues. Even with 4 adults and 2 grandkids we can go a week before filling the black tank.


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