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Old 07-07-2022, 11:04 AM   #1
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Join Date: Sep 2019
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Default Potable Water Tank Best Practices Question

Hello everyone, I’m after the best practices for my 18FBS when it comes to the left over water in the water tank after a trip. Most trips when I arrive home there is still near ˝ tank of water but my next trip may be 20-30 days later. So is it best to drain the tank and leave empty/dry, or refill the tank till full, or place an additive like ‘Refresh’ while sitting.

Also the hot water tank, drain leave empty or leave water in tank?

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Old 07-07-2022, 11:20 AM   #2
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Location: Southern California
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I refill when I get home and just leave the water alone. There is a lot of chlorine in our municipal water supply. Never had a problem with algae or impurities after 17 years of doing this.

But we do not drink our "tank water" because it tastes like chlorine -- it is just for washing and domestic use. We bring separate special jugs of reverse osmosis water for drinking and cooking. It's a hassle, but there is no alternative.

2012 Fun Finder X-139 "Boondock Style" (axle-flipped and extra insulation)
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Old 07-18-2022, 02:21 PM   #3
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Location: Hickory Flat, Ga.
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I can't advise on the fresh water tank. We always camp with at least W/E so we removed ours for extra storage....
As far as the water heater, I always drain and rinse/flush it after every trip. No problems so far.
We carry bottled water for drinking as well. Goes in the cooler alongside the Michelob.
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Old 07-23-2022, 03:40 PM   #4
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Location: WI
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Generally speaking, we don’t drink the water from the fresh water tank (nor the water when hooked up to “city water”) without first passing it through a Brita filter. Our FF does have an under sink charcoal filter for cold water going to the kitchen sink faucet but we still use the Brita filtered water for drinking. We also use an inline filter when hooked to “city water”. We hardly ever fill the reservoir with water from our home before setting out for a trip. 2 reasons: adds 200+ lbs of weight ahead of the axles and we don’t have enough potable water hose to go from the nearest outside spigot to the camper ;-(. We have plenty of “garden hose” but water filled via that mode always tastes awful and might even be toxic!
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