Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-06-2016, 19:18   #1
Registered User

Join Date: Aug 2015
Posts: 7
convert water tank to holding tank

I've got an old Ericson 35 with a 2.5 gal holding tank. It also has a secondary 20 gal water tank we're not using. Anybody ever convert a water tank to a holding tank?
__________________

__________________
flcorah is offline   Reply With Quote
Old 02-06-2016, 19:23   #2
Registered User
 
Reefmagnet's Avatar

Join Date: May 2008
Location: puɐןsuǝǝnb 'ʎɐʞɔɐɯ
Boat: Nantucket Island 33
Posts: 2,737
Re: convert water tank to holding tank

Disconnect the taps first!
__________________

__________________
Reefmagnet is offline   Reply With Quote
Old 02-06-2016, 19:26   #3
Registered User

Join Date: Aug 2015
Posts: 7
Re: convert water tank to holding tank

LOL, and make sure to re-label the deck fittings.
__________________
flcorah is offline   Reply With Quote
Old 02-06-2016, 19:45   #4
Marine Service Provider
 
peghall's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Feb 2011
Posts: 1,533
Re: convert water tank to holding tank

If the tank is metal, not a good idea because urine will turn it into a colander in a few years. But if it's plastic, go for it. You'll have to replace the existing 1/2" discharge fitting with a 1.5" fitting, but that's not hard to do, especially if you have enough clearance above the tank to put it in the top of the tank with a pickup tube inside and put a plug in the small one.
__________________
2017 Peggie Hall
Specializing in marine sanitation since 1987
Author "The NEW Get Rid of Boat Odors"
https://www.amazon.com/New-Get-Rid-B...dp/1892399784/
peghall is offline   Reply With Quote
Old 02-06-2016, 22:34   #5
Registered User

Join Date: Aug 2015
Posts: 7
Re: convert water tank to holding tank

Thanks, but it is steel.
__________________
flcorah is offline   Reply With Quote
Old 02-06-2016, 22:44   #6
Registered User

Join Date: May 2010
Location: Sydney Australia
Boat: Fisher pilothouse sloop 32'
Posts: 750
Re: convert water tank to holding tank

Quote:
Originally Posted by flcorah View Post
Thanks, but it is steel.
Hi, seeing that it is steel don't do it, you will be really pissed when it eventually leaks into the bilge and guess who has to clean up the mess.
__________________
Rob aka Uncle Bob Sydney Australia.

Life is 10% the cards you are dealt, 90% how you play em
Uncle Bob is offline   Reply With Quote
Old 03-06-2016, 08:26   #7
Registered User

Join Date: Apr 2015
Posts: 82
Re: convert water tank to holding tank

Only to be legal, never used it
__________________
Classicsailboat is offline   Reply With Quote
Old 03-06-2016, 08:35   #8
Registered User

Join Date: Mar 2011
Location: fl- various marinas
Boat: morgan O/I 33' sloop
Posts: 1,100
Re: convert water tank to holding tank

Seems like a foolish economy to me. You are going to invest significant time and effort into replumbing. A little more to get a holding tank that is new and designed for the job would be a safer play.
__________________
Dave22q is offline   Reply With Quote
Old 03-06-2016, 08:51   #9
Registered User

Join Date: Nov 2011
Location: Georgian Bay
Boat: Ericson 35-2
Posts: 74
Re: convert water tank to holding tank

I am sure you mean stainless steel. I have just bought an older Ericson 35-2 (1978) with a stainless holding tank that appears original and clean and free of any leaking. This is a problem waiting to happen..?
The tank is 15 gallons or so, strange you would have a 2.5 gallon tank... probably a modification by the PO
__________________
sailortype is offline   Reply With Quote
Old 03-06-2016, 11:50   #10
Registered User

Join Date: Feb 2015
Boat: Pearson 36 cutter
Posts: 46
Re: convert water tank to holding tank

Nature's Head, maybe? As in no holding tank?
__________________
BHI_Guy is offline   Reply With Quote
Old 03-06-2016, 12:03   #11
Registered User

Join Date: Aug 2015
Posts: 7
Re: convert water tank to holding tank

Right about the tank being stainless steel. I have a Y valve in the system now and will replumb to remove the smaller tank and use the space to install a 110v electric water heater near the head/shower.
__________________
flcorah is offline   Reply With Quote
Old 03-06-2016, 12:19   #12
Moderator
 
Don C L's Avatar

Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 4,395
Images: 34
Re: convert water tank to holding tank

2.5 gal holding tank? Are you sure? On my old set-up that would have been two or 3 flushes. Even a porta-potty has more than that. So where will your fresh water be going then? (I think I'd go back to the cedar bucket before I considered that!)
__________________
DL
Pythagoras
1962 Columbia 29 MKI #37
Don C L is offline   Reply With Quote
Old 03-06-2016, 12:50   #13
Senior Cruiser
 
Kenomac's Avatar

Cruisers Forum Supporter

Join Date: Jan 2012
Location: Somewhere in the Adriatic Sea
Boat: Oyster 53 Cutter
Posts: 8,515
Re: convert water tank to holding tank

Keep your setup the way it is.
__________________
Kenomac is offline   Reply With Quote
Old 05-06-2016, 12:44   #14
Registered User

Join Date: Oct 2015
Location: Summerstown Ontario Canada
Posts: 236
Re: convert water tank to holding tank

Quote:
Originally Posted by flcorah View Post
I've got an old Ericson 35 with a 2.5 gal holding tank. It also has a secondary 20 gal water tank we're not using. Anybody ever convert a water tank to a holding tank?
On another boat I had enough space and yes I had converted from a 15 gallons to 40 gallons plastic tank. Was well worth the effort and is still going strong. On the present boat, I did not have the space and the tank was 15 gallons aluminum. I replaced it last august. It had lasted 26 years. I would have gone plastic but would have had it custom made.
__________________

__________________
seabreez is offline   Reply With Quote
Reply

Tags
holding tank, water

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Convert Fresh Water Tank to Holding Tank - Stainless myocean Plumbing Systems and Fixtures 5 17-01-2013 09:05
Holding Tank Holding Tank Leaff Construction, Maintenance & Refit 17 01-07-2012 06:12
Convert Plastic Water Tank to Diesel Hugh Walker Plumbing Systems and Fixtures 5 29-09-2011 15:40
Converting a Water Tank to a Holding Tank Ray Tarr Plumbing Systems and Fixtures 3 21-02-2010 18:39



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:12.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.