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Old 04-09-2008, 06:13 PM   #15
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Join Date: Mar 2008
Location: AZ Mountains
Posts: 5
My Bounder did the same thing - drained like it was molasses. I found that by turning the pump on, it speeded up things. Then, I pitched the dumb tiny pull-up valve (it only has a tiny hole, to boot) and installed one of those 90 degree push-on-the-pipe types with a half inch outlet. What an improvement - I attach a garden hose to it and water the flowers, really!

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Old 04-13-2008, 03:01 PM   #16
Join Date: Feb 2007
Location: Rockland Mass
Posts: 50
Thanks everyone,
I have a 2007 Gulfstream BT Crusier motorhome.
The fresh water drain comes out of the bottomend of the tank, runs horizontal for no more than 6 inches to the slide valve then drops through the floor.
I crawled under the rig and tried to snake the line to no avail.
I then put a gallon of bleach in the tank in case it was mold or algae. Also did not help.
I am happy to hear that others have had a similiar problem and that it was a function of the design.
I think that I will leave it till next fall when it is time to winterize and then replace the slide valve with a ball valve as was suggested above.
Thanks again. we are new at this and it is a real comfort to be able to talk to the "old pros"

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Old 04-14-2008, 06:04 AM   #17
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If you put a gallon of bleach in your fresh water tank, be sure to take a lot of bottled water with you. You sure won't be drinking any water out of that tank!
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Old 04-14-2008, 06:02 PM   #18
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I submit that whoever told you to add a gallon of bleach may be trying for a role in an Alfred Hitchcock movie, wringing his hands and tweaking his moustache. Two cups is probably too much, unless you have a real algae problem. Start with one cup and let it sit for a few (2) hours, then drain, refill, and drain again till the taste is gone.
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Old 04-14-2008, 07:05 PM   #19
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I would suggest checking the vent/overflow side of the tank. Not sure how its vented but it should be, air has to have some place to go when filling, and prevent overfilling of tank. If vent is plugged or blocked it will restrict its ability to drain. Some manufactures even installed valves on the vents to prevent tanks from siphoning water out of them.

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