Treatment to clean and minimize scum in shower sump? [2007

Discussion in 'General Discussion' started by mobocracy, Aug 11, 2019.

  1. mobocracy

    mobocracy Member

    295
    Jun 29, 2014
    United States
    310 Sundancer
    350 Mag & Bravo III
    Is there anything “safe” that could be added to the shower sump to minimize scum and mold buildup?

    I just cleaned mine out because my boat was stinking when the AC got left on for extended times. I’m pretty sure the sump pump was clogged with scum and not pumping well. It was super gross. I cleaned it out well and tested it to know it actually moves water now.

    I should probably be getting in it more often to clean it, but I was thinking it would be great if there was something like a urinal mint or something that would inhibit nasty stuff from growing in the bit of water that never drains. Of course I don’t want anything so harsh it rots the hose or damages the pump.
     
  2. sbw1

    sbw1 Well-Known Member

    Oct 10, 2006
    West Michigan
    This is listed in my signature
    This is listed in my signature
    IMG_4230.JPG I use citrus bilge cleaner poured down the drain. No smells at all other than fresh clean ones. Do this weekly when cruising as the shower gets heavy use.
     
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  3. Third Edition

    Third Edition Active Member

    291
    Apr 9, 2017
    NE Florida
    360 Sundancer 2002
    T-8.1L V-drives
    What he said + use only liquid soap. Run HOT water down there regularly, too.
     
    marty51 likes this.
  4. sbw1

    sbw1 Well-Known Member

    Oct 10, 2006
    West Michigan
    This is listed in my signature
    This is listed in my signature
    IMG_4230.JPG Also install a round piece of fiberglass window screen in the drain if you have a screw in drain cap. Keeps the hair out of the sump.
     
    BOB TYSON likes this.
  5. Craig

    Craig Well-Known Member GOLD Sponsor

    535
    Feb 8, 2007
    Maryland
    2006 320 Sundancer
    twin 350 Horizon V drives
    I use no flex in mine. Works great.
     
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  6. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    +1!
     
    JVM225 likes this.
  7. b_arrington

    b_arrington Active Member GOLD Sponsor

    943
    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    Run clear water in the sump after using it to shower. Using only liquid soap helps minimize build up. And regular doses of bilge cleaner after use to keep things flowing.
     
  8. NotHerDecision

    NotHerDecision Well-Known Member PLATINUM Sponsor

    Jun 28, 2016
    Houston, Texas
    2001 Sea Ray 460 Sundancer
    2014 Seadoo 155 LTD
    2105 Seadoo 130 SE
    2013 Mercury Dinghy
    Cummins 6CTA 8.3L
    Noflex digestor will solve your issues. Fill the sink with water and some noflex and drain it into the sump when you leave the boat. Problem solved.
     
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  9. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Another believer in Noflex in the sump every once in a while. I’ve also had a lot less buildup in the sumps since I started using liquid body wash instead of soap.
    My AC units drain in to the sumps too. I use AC Pan tablets in the pans.
     
    Little Ducky and MonacoMike like this.
  10. endless seas

    endless seas Well-Known Member SILVER Sponsor

    Feb 13, 2008
    Baltimore,Maryland
    1997 450 DA
    Cat 420
    Through the years I tried many many cleaners to keep our sump ( which was huge ) all the sinks drained into it and probably held over 5 gallons if the bilge pumped crapped out which several times it did.....errrrrrrrr

    The one item I found that worked flawlessly was Joy dishwashing liquid. At the end of the week I put a little in each drain ( sinks and shower ) and the water in the sump became crystal clear! Go figure after all those years I finally found something.

    Tommy
     
    Robski97 likes this.
  11. HardHead

    HardHead Member

    32
    Jan 9, 2015
    Sue Creek Maryland
    1996 Sea Ray 370 Sundancer
    Previous boats:270 Sea Ray, 230 Sea Ray,190 Wellcraft,
    24' Trojan
    Twin 454 Mercruiser Inboards
    Try Hydrogen peroxide thru the shower drain.
    Let it sit in shower sump for about 1 hour.
    Rinse with fresh water and pump over.
    Been doing this for years.works great.
     
  12. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    450 Sundancer
    3126 Cat's
    Some of the folks on here will disagree with my method, but it has been working for 10 years with no side effects... I place a toilet puck on the upper shelve of my sump box.
     
  13. PMC

    PMC Well-Known Member

    Apr 10, 2009
    Long Island, NY
    2001 40 Sedan Bridge
    Cummins 6CTA
    I was going to comment with the same, but held back due to the "Safe" comment in the request. The rules are that bleach will ruin both plastic and rubber parts (whale valve). However, I'm in the same camp as you. Been doing this for years - replace the puck every 2-3 months......no gunk, gone boating!
     
    The Bill Collector likes this.
  14. CliffA

    CliffA Well-Known Member GOLD Sponsor

    Dec 29, 2009
    Lake Norman, NC
    2001 Sea Ray 340DA
    Name: 'Happy Place'
    4.5kW West. Generator
    Purchased Nov. 2014
    Fresh Water Use
    Twin Merc. 6.2L (MPI)
    640 hp (Total)
    Raw Water Cooled
    V-Drive Transmissions
    The Bill Collector likes this.
  15. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    450 Sundancer
    3126 Cat's
  16. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    FWIW...Unique makes a holding tank treatment and toilet bowl cleaner. The advertisement and Amazon make it sound just like Norflex, only about 1/3 the cost. I tried it for several months. It works about 1/3 as good as Norflex as well. When I pump out, 99% of what I remove looks like stained water. With the Unique, there were a lot more solids to remove....just my $0.02...these pucks may work great in the shower sump. Personally, I put in a 1/2 scoop of Norflex when I leave for the week and never had an issue.

    Bennett
     
  17. TNT8808

    TNT8808 Active Member PLATINUM Sponsor

    437
    May 25, 2016
    West Michigan
    2008 48 Sundancer
    Cummins QSC 8.3's
    Avon Seasport 340
    40 HP Yamaha
    I read on one thread that I believe Carter Chapman had mentioned that he was using Oxy Kem in his, so I bought some and when I went to inspect after the first month of use the shower sump was pretty clean and had no smell. So I put another one in, and thought why not put one in my a/c strainer to see what it does? So I did, and within 5 minutes the sight glass was clean and little brown flakes were coming out the side. This happened for about 6 hours until all the Oxy Kem was gone...so I did it again, and the brown flakes disappeared within about an hour.

    -Tom
     
    carterchapman likes this.
  18. endless seas

    endless seas Well-Known Member SILVER Sponsor

    Feb 13, 2008
    Baltimore,Maryland
    1997 450 DA
    Cat 420
    Good to know....
     
  19. Robski97

    Robski97 Well-Known Member

    Jan 15, 2007
    North Bellmore, NY
    44DA
    Cummins QSC 8.3's
    Guys ,
    The noflex ur talking about is a holding tank treatment that ur using in the shower sump? just want to make sure im getting the right stuff.

    Rob
     
  20. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Yes, it’s the holding tank stuff. I’ve used it the last few seasons in the sumps. I pour a teaspoon full in the shower drains every few weeks and flush it through to the sumps with some hot water. It does a nice job of keeping the sumps clean. I’ve also switched to body wash instead of soap and been diligent about putting the AC Pan Tablets in the AC pans so it is probably a combination of those three things that is helping.
    I recently tried the Oxy Kem that Carter recommended as a less expensive alternative in one of the sumps to do a comparison but it hasn’t been long enough to check the results yet.
    Regardless of the results of the Oxy Kem in the sumps, I’m still going to stick with the NoFlex in the heads because it is that good.
    Well worth the money IMHO.
    Just be sure to flush it thoroughly through.
     

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