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09-14-2019, 11:01 AM
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#1
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Junior Member
Join Date: Apr 2019
Posts: 14
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Gray tank seems to fill up too quick
Anybody have this problem? Mine holds 37 gallons but it fills up after a couple short showers and a little other water usage.
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09-14-2019, 11:07 AM
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#2
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Senior Member
Tiffin Owners Club
Join Date: Feb 2017
Location: Frankfort, KY
Posts: 1,906
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I believe it can be only a few things.
You are using more water than you think. It doesn't drain completely when you empty it. Something is adding water to the tank that you are aware of.
If it were me, I would empty the tank completely, and then one by one add a 5 gallon bucket of water to the shower and see what the tank actually holds. Once you get the answer on how much it holds you can then go from there.
__________________
Scott and Deanna
2014 Tiffin Allegro Bus 45LP
Home base - Polk City, FL
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09-14-2019, 11:21 AM
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#3
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Senior Member
Join Date: Dec 2017
Location: Sacramento, California
Posts: 1,402
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One shower will fill it up. We get wet, turn off water, soap up, and turn on water to rinse. It seems to help.
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09-14-2019, 11:24 AM
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#4
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Senior Member
Join Date: Feb 2012
Posts: 175
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Sounds like it might have an obstruction. There are adapters that allow a back flush into the tank.
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09-14-2019, 11:25 AM
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#5
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Senior Member
Join Date: Apr 2018
Location: Mooresville, NC
Posts: 266
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I don't know about that ^. We have a 40 gal grey tank and can take several showers (like 5 - 7) before it's full. And that's 'normal' showers - not 'army' showers.
__________________
Shawn, Susan (& Maya in spirit)
2016 Thor Miramar 34.1
2015 Jeep Cherokee Trailhawk (the "Mango Tango")
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09-14-2019, 11:35 AM
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#6
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Senior Member
Join Date: Jan 2017
Location: Little Rock, Arkansas
Posts: 2,594
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Quote:
Originally Posted by FFF
Anybody have this problem? Mine holds 37 gallons but it fills up after a couple short showers and a little other water usage.
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When you say it fills up are you going by the gauge on the wall? Or do you know it's really full?
__________________
2021 Keystone Outback 221UMD
2018 Tundra Limited 5.7 liter
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09-14-2019, 11:46 AM
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#7
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Senior Member
Join Date: Nov 2008
Posts: 534
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Quote:
Originally Posted by FFF
Anybody have this problem? Mine holds 37 gallons but it fills up after a couple short showers and a little other water usage.
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Amazon has a couple of Water Flow Meters for about $15. They attach to your city water hose.
https://www.amazon.com/Rainwave-RW-9...w+%2Caps%2C160
Buy one and see how much water you are REALLY using.
Or as someone else suggested, empty your tank, then fill it up and see what the meter says.
Tim
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09-14-2019, 11:59 AM
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#8
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Senior Member
Join Date: Feb 2010
Location: Delson, Québec
Posts: 132
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The shower and the kitchen sink goes to the grey tank and the washer/dryer if you do have one !
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2010 Gulfstream Independance 38'
2009 Smart fortwo cabriolet convertible
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09-14-2019, 12:02 PM
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#9
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Senior Member
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 2,073
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Drop your shower head into a 5gal bucket and turn the water on. You might be surprised how much it flows.
My shower heads flow right at 2gpm. Two 5 minute showers is 20 gallons.
How long does it take before the shower water warms up? Showers use a lot more water than most people think.
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
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09-14-2019, 12:07 PM
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#10
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Senior Member
Join Date: Jul 2003
Posts: 4,455
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Many of us have had RVs where we wish the gray tank had more capaicty so, yes, it's common to feel that way.
As other have implied, what do you consider a "short shower?" ...to some, 10 minutes is a short shower.
What is the GPM of your shower head? Similar to AKIQPilot's example, if it's an older one with a 2.5 GPM shower head, then two 7 minute showers will almost be at your capacity or (2.5 x 7) x 2 = 35 gallons so you're just about there.
On several RVs we've owned through the years, I've had to equalize the gray and black tank ...or push some of the gray water into the black tank so we'd have more gray capacity --good explanation by Ray,IN ... go HERE
If you've checked everything out by the suggestions given so far, then 1) take even shorter showers, and 2) change your shower head to one with a very low GPM ...at least one that is 2.0 GPM or less.
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09-14-2019, 02:56 PM
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#11
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Senior Member
Damon Owners Club Freightliner Owners Club
Join Date: Mar 2006
Location: North East Texas
Posts: 4,946
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__________________
USN Retired, Life time member of the DAV.
Enjoying the 2008 Damon Tuscany 4056, #3998 no your eyes are fine, there are really 6 slides
2022 F150 King Ranch or 2012 Edge toads
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09-14-2019, 03:05 PM
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#12
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Senior Member
Join Date: Jan 2017
Location: Little Rock, Arkansas
Posts: 2,594
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It's just in how you use them I suppose. Our gray is 44 gallons and will go for four days pretty easily with two of us. We take short showers, just enough to accomplish the task with no undue hardship. We wash and rinse dishes but we don't just turn the water on and let it run.
One thing that helps us is the bathroom sink drains into the black tank.
__________________
2021 Keystone Outback 221UMD
2018 Tundra Limited 5.7 liter
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09-14-2019, 09:42 PM
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#13
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Senior Member
Join Date: Jan 2016
Posts: 8,609
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You guys are scaring me. We have a 55 gallon grey tank, and can normally go 5 days before dumping. If we are staying a couple of weeks at a COE or state park with no sewer hookups, I've got a blue tote to dump into. But, we are currently staying 11 days in a national forest with no sewer, and I didn't know it when I booked, but there is NO dump station here. The nearest place to dump is a pay station across town, 5 miles away. We're trying to stretch it out by taking showers only every other day. When summoning the hot water, we put the shower head in a bucket, and dump the clean cold water outside on the ground. We're using paper plates so we don't have to wash dishes. Hope we can make it the full 11 days without have to drive the coach across town!
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Mike
2014 40G Fleetwood Discovery
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09-14-2019, 11:10 PM
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#14
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Senior Member
Join Date: Mar 2017
Location: Zebulon, NC
Posts: 5,211
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Quote:
Originally Posted by chindog
You guys are scaring me. We have a 55 gallon grey tank, and can normally go 5 days before dumping. If we are staying a couple of weeks at a COE or state park with no sewer hookups, I've got a blue tote to dump into. But, we are currently staying 11 days in a national forest with no sewer, and I didn't know it when I booked, but there is NO dump station here. The nearest place to dump is a pay station across town, 5 miles away. We're trying to stretch it out by taking showers only every other day. When summoning the hot water, we put the shower head in a bucket, and dump the clean cold water outside on the ground. We're using paper plates so we don't have to wash dishes. Hope we can make it the full 11 days without have to drive the coach across town!
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Have you tried the outside shower (if you have one)?
__________________
Kelly and Jerry Powell with Halo (Lethal White Aussie), Nash the Rat Terrorist, and now Reid, the "Brindle we have no idea puppy"
2020 Grand Design Solitude 390RK-R
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