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Old 10-07-2011, 08:10 PM   #41
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RE: Holding tank vent line

Peggy, I spoke with you about a month ago with the problem of a "too large" holding tank of 250 gallons and a 1/2" vent line that is about 10 feet long and rises (not in a straight line) about 5'. I have been searching for large enough hru hulls that I can use but came across a "Lil Stanker" in-line 1 1/2" 12 volt fan. What do you think of tapping into the top of the take at the opposite end for a second vent line, installing the in-line fan and syncing it to run when either one of the Vac-U-Flush heads is pumping.
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Old 10-07-2011, 09:35 PM   #42
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RE: Holding tank vent line

It COULD work...but only if it it's an exhaust fan and runs 24/7/365 (except during any extended layup, of course). However, if your tank is much deeper than 18", aeration may be the only answer...'cuz 18-20" is about the max depth that can be kept aerobic using passive ventilation above the the surface. 250 gallons is a LOT of sewage--a lot of WEIGHT (over a ton!)--to try to manage. We can brainstorm some ideas if you'd like to send me an email.
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