RV Holding Tanks: Should You Leave Them Open or Closed? | Full-time RV Family | Ep 99

In today’s episode Brian walks you through how we handle our RV’s holding tanks when we’re stationary for more than a few days. Should you leave your black and gray tanks open all the time? Should they stay closed? Should you leave your black tank closed and gray open? Come find out the best configuration and, more importantly, why it’s important to NEVER leave your black tank open!

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10 thoughts on “RV Holding Tanks: Should You Leave Them Open or Closed? | Full-time RV Family | Ep 99

  • January 6, 2021 at 2:11 pm

    What if you camp and it’s only 1/3 full. Can you park it for a few weeks until your next adventure or is it better to dump after every trip?

  • January 6, 2021 at 2:11 pm

    Nice 2 year old video. All good info. If your not already doing this then pre-charge your empty black tank using cheap Geo-Method products after the flushing cycle, this helps with the cleaning and odors a lot. The method we use is a cup of Liquide water softener mixed with a cup of CHEAP LIQUID laundry soap in a full toilet bowl of water and followed by 2 full bowls of water into the closed black tank and use it normally with plenty of water till its full again, the water softener helps break down the solids and makes the water slick and the soap and softener helps keep the tank walls and sensors clean. The soap helps to lube the tank valves and help them last. Pre-charging insures your solids are in enough water to start soaking apart immediately! Also We use only the SCOTTS single ply paper (cheaper then RV paper). NOTHING else goes into the Black tank. Chlorine shouldn't be used in the Black tank IMHO! Not good on the system's parts or septic systems. We leave the Gray valves open until the Black tank starts burping when the bowl is flushed then close the Gray valves for a couple days worth of showers and dish washing. we don't have a washer dryer and there's just 2 of us. After the Black tank flushing is done and the valve closed, then we drain the Gray's to flush the slinky. I personally don't think your washer drains with enough volume any time its pumping to wash the top 1/2 of the slinky clean like pulling the valve on a Gray that has at least a quarter tank full. A clear section of pipe before the slinky is the ONLY way you can know what is coming down the chute. Enjoy the LIFE!

  • January 6, 2021 at 2:11 pm

    Awesome video. I got bad advice about leaving my black tank line open. Thanks for the details.

  • January 6, 2021 at 2:11 pm

    Awesome Video, I am just getting into this lifestyle. Quick ?, with leaving the great tank connected to the sewer when stationery. Do you notice any sewer odors coming back up?


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