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Old 11-19-2013, 11:35 AM   #4
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Join Date: Sep 2010
Location: Willamina Or
Posts: 277

You said you are using a boat blower. Is the blower blowing air out of the bathroom and if it is, where is the air entering the bathroom. If the bathroom is almost air tight then the blower may be pulling air in through the vent and then up through the shower. If you could have positive pressure in the bathroom you may get rid of the odor. If you are blowing air out and you flush the toilet you are letting black tank air in. If you could have a two-way blower that may help. If you place a piece of soft rubber over the shower drain that may also help. Good luck Kenn
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