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Old 06-11-2021, 09:56 PM   #1
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Slow shower drain

A friend of mine is struggling with a slow shower drain.

1) he has cleaned the sump and pump out.

2) he has poured boiling hot water down the drain a couple of times.

3) The shower continues to drain slowly.

Any thoughts?

Edit: Found this post with some possible solutions by searching another word set. Any other thoughts?
https://www.trawlerforum.com/forums/...lem-58179.html
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Old 06-11-2021, 10:19 PM   #2
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Kinked hose.
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Old 06-11-2021, 10:23 PM   #3
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Kinked hose.
My thought exactly. Or Plugged. In any event if it's possible to replace the hose it should fix the problem, especially if the hose is old.
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Old 06-11-2021, 10:27 PM   #4
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Agree on replacing the hose. Did the boiling water get through the hose?
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Old 06-11-2021, 10:39 PM   #5
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The other thing that I used to do was the baking soda and vinegar trick. Boiling water followed by baking soda, followed by vinegar. Let sit for a while - ten minutes seemed to work best - and then more hot water. Worked okay until the hose was sorted properly. Always use the baking soda and vinegar in the rest of the drains.
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Old 06-11-2021, 10:47 PM   #6
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Just changed my hose today. What a PITA! Probably been in there since 1988. Attached a small line to it so I could pull the new hose back the same path. Came loose at the last minute so had to fish the hose out with my mechanical fingers. My wife helped but not real enthusiastic. Took most of the day. BUY A BOAT AND HAVE FUN!!!!
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Old 06-12-2021, 06:22 AM   #7
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Thanks! It is draining. Just slowly. I will tell him to try the different solutions offered. Getting the drain pulled would be a difficult proposition where it is.
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Old 06-12-2021, 08:20 AM   #8
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I just tried this on my boat yesterday and it worked great.

https://www.lowes.com/pd/Green-Gobbl...tle/5001486121

There used to be standing water in the shower because it was so slow, now water goes down as fast as I can pour it. There are 2 bottles in 1 package. I poured 1 down the drain and left overnight. Then poured 2nd bottle and waited about 4 hours (actually went boating) then flushed with water and it went down quickly. Today I will flush with more water to clear out the sump. I assume it is safe enough for hoses and overboard discharge compares with other drain cleaners. I've also used it in the past on cockpit drains with good results.
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Old 06-12-2021, 10:41 AM   #9
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Slow drain

This was on our 2000 390
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Old 06-12-2021, 11:13 AM   #10
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Quote:
Originally Posted by Helmsman View Post
A friend of mine is struggling with a slow shower drain.

Any thoughts?

Edit: Found this post with some possible solutions by searching another word set. Any other thoughts?
https://www.trawlerforum.com/forums/...lem-58179.html

I occasionally run an electrician's snake through mine to good effect.
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Old 06-12-2021, 11:28 AM   #11
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We have the same issue with our forward head shower drain. Very slow! After cleaning/blowing the hose out I came to the conclusion it is gravity. The drain in the shower pan forward is what appears to me to be at almost the same level as the hose exit in the sump further aft.

Fortunately for us, the aft head shower/bathtub (which drains properly) is what we use 99.9% of the time.

Just lends credence to one of my favorite sayings: "Gravity. It's not just a good idea, it's the law!"

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Old 06-12-2021, 02:14 PM   #12
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This was on our 2000 390
Wow! Not good.
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Old 06-12-2021, 02:15 PM   #13
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Agree on replacing the hose. Did the boiling water get through the hose?
Yes it did. Helped a little.
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Old 06-12-2021, 02:23 PM   #14
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I occasionally run an electrician's snake through mine to good effect.
This. If there aren’t too sharp bends or ells in it.
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Old 06-12-2021, 03:14 PM   #15
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Caustic soda/sodium hydroxide

https://shop.coles.com.au/a/national...x-caustic-soda
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Old 06-12-2021, 05:17 PM   #16
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Originally Posted by gotfw View Post
This was on our 2000 390
If this was the problem, I'd assume it was always slow. But if it was fine at some point and now getting slower, I would try to clear whatever is clogging it. Again, the drain cleaner I suggested did wonders for me, not sure why nobody had a reply, for or against. Not only did it work great, it's easily the cheapest and easiest thing to try.
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Old 06-12-2021, 05:23 PM   #17
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If this was the problem, I'd assume it was always slow. But if it was fine at some point and now getting slower, I would try to clear whatever is clogging it. Again, the drain cleaner I suggested did wonders for me, not sure why nobody had a reply, for or against. Not only did it work great, it's easily the cheapest and easiest thing to try.
I sent your solution to him, he picked some up, it is working a little better after using it once. He had to leave the boat, and will use it again when he gets back. Hopefully, that clears it up for him. I appreciate the guidance!
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Old 06-12-2021, 05:34 PM   #18
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I sent your solution to him, he picked some up, it is working a little better after using it once. He had to leave the boat, and will use it again when he gets back. Hopefully, that clears it up for him. I appreciate the guidance!
Hope so. I would pour in 1 bottle and wait overnight then pour the other bottle and wait half a day or so then flush with hot water. That's what I did. Worked great. Obviously, no bar soap should be used on the boat, only liquid. I also suggest adding a screen to the drain opening to catch hair.
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Old 06-21-2021, 01:05 PM   #19
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No bar soap? Please elaborate, as I've not heard that.
Thanks!
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Old 06-21-2021, 01:08 PM   #20
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No bar soap? Please elaborate, as I've not heard that.
Thanks!
Bar soap has compounds which can contribute to clogging better than body wash type soaps. You know, like the analogy of sticks of butter to squeeze butter as regards artery clogging.
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