Reply
 
Thread Tools Display Modes
 
Old 09-20-2017, 11:55 AM   #1
Senior Member
 
City: Oriental
Country: USA
Vessel Name: Meridian
Vessel Model: Albin 36 Trawler
Join Date: Aug 2014
Posts: 116
Water

How much bleach per 100 gal should I use to clean the water tanks and water lines.. how much would I use per 100 gal after the tanks and lines are flushed. thank you
__________________
Advertisement

KEVMAR is offline   Reply With Quote
Old 09-20-2017, 12:06 PM   #2
Guru
 
mbevins's Avatar
 
City: Windsor
Country: Canada
Vessel Name: Keeper IV
Vessel Model: 44 Viking ACMY
Join Date: Nov 2013
Posts: 1,305
I typically use a gallon to 100 gallons, let sit for 24-48 hours and then thoroughly flush.
I don't add any bleach inbetween sterilization and usually do it once a year.
I have fiberglass tanks and copper water lines, others with SS tanks may think it's excessive.
__________________

__________________
"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

mbevins is offline   Reply With Quote
Old 09-20-2017, 12:13 PM   #3
Senior Member
 
City: Westerly, RI
Country: USA
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 399
I have 2 x 60 gallon poly tanks. I had significant 'mold' inside the tank. You could see a scum line from outside of the tank. The water smelled horrible.

I used 1 cup of bleach for each 60 gallon tank. Filled the tank with water and let it sit for up to a week. Drained the tank and repeated the process. It took 3-4 cycles to completely clean the tanks and lines.
Shrew is offline   Reply With Quote
Old 09-20-2017, 12:40 PM   #4
Senior Member
 
City: Oriental
Country: USA
Vessel Name: Meridian
Vessel Model: Albin 36 Trawler
Join Date: Aug 2014
Posts: 116
I have steel tanks, forgot to mention that
KEVMAR is offline   Reply With Quote
Old 09-20-2017, 12:52 PM   #5
Guru
 
City: East Coast
Country: USA
Join Date: Dec 2013
Posts: 3,411
Quote:
Originally Posted by KEVMAR View Post
How much bleach per 100 gal should I use to clean the water tanks and water lines.. how much would I use per 100 gal after the tanks and lines are flushed. thank you
If you don't have a problem, I wouldn't use any bleach.

I wouldn't add bleach if you are filling the tanks from chlorinated city water.
WesK is offline   Reply With Quote
Old 09-20-2017, 01:19 PM   #6
Guru
 
hmason's Avatar
 
City: Westport, CT
Country: USA
Vessel Name: Magic
Vessel Model: Grand Banks 46 Europa
Join Date: Aug 2013
Posts: 1,838
+ 1
__________________
Howard
Magic, 1996 Grand Banks Europa
Westport, CT and Stuart, FL
hmason is offline   Reply With Quote
Old 09-20-2017, 01:47 PM   #7
Senior Member
 
City: Oriental
Country: USA
Vessel Name: Meridian
Vessel Model: Albin 36 Trawler
Join Date: Aug 2014
Posts: 116
most folks have a water softener and filter where I live, and the water in the tank has been there for over 2 years i have added more water but never drained it
KEVMAR is offline   Reply With Quote
Old 09-20-2017, 02:29 PM   #8
GFC
Guru
 
GFC's Avatar
 
City: Tri Cities, WA
Country: USA
Vessel Name: Beachcomber
Vessel Model: Sea Ray 550 Sedan Bridge
Join Date: Nov 2012
Posts: 2,624
When I dewinterize the boat I use about a cup of bleach for my 100 gallon tank. It's empty when I put it in. Then I open each faucet, hot and cold sides, one at a time until I can smell the bleach water coming out. That way I know I have bleach throughout my system.


I let that sit for 24 hours then run all the water out. Then I'll put some water (~20 gallons) in the tank and run it through all the faucets until there's no more bleach smell.


When I fill the tank I used an inline filter. It's probably not necessary but we have never had any foul taste or odor from the water.
__________________
Mike and Tina
Beachcomber 1995 Sea Ray 550 Sedan Bridge
GFC is offline   Reply With Quote
Old 09-20-2017, 03:32 PM   #9
Guru
 
City: Between Oregon and Alaska
Country: US
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 594
If you're using city water, it probably will keep you tanks clean if turned over regularly. Long term storage would be better with dry tanks.
Bacteria can enter the tank in air thru the vent as the tank heats and cools everyday. So even sanitized water, but not treated, will become contaminated. I make all my water, and prior to the tanks the water goes thru a UV light sanitizer. Without treatment, my tanks will become contaminated. From there the plumbing can become contaminated.
I treat my water everytime I make a large batch. The boat holds 450 gallons and I usually let the tanks get down to a 100 gallons before making more. I use a cheap pool test kit, bought on Ebay for $5. I add enough chlorine to just show on the lowest point of the scale. I also use a set of filters before the galley sink that removes any chlorine and odd tastes (if any). Bar sink and ice makers are also on this line. Too much chlorine left in the lines can slowly ruin some rubber parts like valve, pump, and faucet seals.
It is actually easier to stay ahead of water problems than deal with contaminated tanks and plumbing.
Lepke is online now   Reply With Quote
Old 09-20-2017, 03:38 PM   #10
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 5,034
Water

What I do.

1/2 gal per 100 gallons to disinfect the system. Let sit for 3 hours but no more than 24. Rinse at least twice then fill up. After that, I will add 1 tsp bleach per 50 gallons of water when I add water to the tanks.

Not a recommendation, just a report.

Edit to add: Adding bleach to city water is likely unnecessary and I often won't if I know that I will be going through the water relatively quickly. But in the off season, we don't go through it as quickly so I will add the bleach to the system.
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 09-20-2017, 05:03 PM   #11
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,547
There are many suggestions on both RV sites and boating sites that discuss how to keep your system safe. Annual disinfecting and then regular servicing.

Funny how many flip out about oil changes and antifreeze changes... yet say....ho hum, just use city water and don't worry. Despite many boat MANUALS that advise otherwise.

This site cracks me up.... .....just proves to me what people are comfortable with or understand...which is most boating topics...when they don't .....it's quick, to the manuals everyone....

A quick search probably will show where the Headmistress has answered this many times for us.
psneeld is offline   Reply With Quote
Old 09-20-2017, 05:52 PM   #12
Guru
 
Pgitug's Avatar
 
City: Punta Gorda, fl
Country: Usa
Vessel Name: Escapade
Vessel Model: Nordic Tug 37 2002
Join Date: Jan 2015
Posts: 944
Do not use bleach if you have aluminum water tanks.
Big no no
Pgitug is offline   Reply With Quote
Old 09-20-2017, 06:37 PM   #13
Senior Member
 
City: San Francisco
Country: USA
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 349
I used the water tank flush from West Marine. Seemed to work pretty well:

https://www.westmarine.com/buy/west-...aner--14044424

Then I put this stuff in:

https://www.amazon.com/gp/product/B001444ZHA
MichaelB1969 is offline   Reply With Quote
Old 09-20-2017, 08:11 PM   #14
Senior Member
 
Maerin's Avatar
 
City: Anywhere
Country: USA
Vessel Name: M/V Maerin
Vessel Model: Solo 4303
Join Date: Jun 2013
Posts: 151
Quote:
Originally Posted by KEVMAR View Post
How much bleach per 100 gal should I use to clean the water tanks and water lines.. how much would I use per 100 gal after the tanks and lines are flushed. thank you
Posted about this some time ago....
Here:
Trawler Forum - View Single Post - Water Purification?

Steve
__________________
Steve Sipe
Selene 4303 Maerin
http://maerin.net
Maerin is offline   Reply With Quote
Old 09-20-2017, 11:15 PM   #15
Art
Guru
 
Art's Avatar
 
City: SF Bay Area
Country: USA
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 7,906
What you do to [add to] the water in your tanks is greatly dependent on what water you fill with and what uses you use it for.

We keep our tanks clean by usually adding about 1/2 cup bleach to each of the 39.6 gal tanks every third fill up. We do not drink our tank water... it's generally agreed that water at our dock is not necessarily perfect!
Art is online now   Reply With Quote
Old 09-20-2017, 11:29 PM   #16
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,412
About a year ago, Practical Sailor Magazine did extensive tests of water system cleaners. This is the one they liked. It won't hurt aluminum tanks either.
Clean Tabs Ltd | Water Purification | Water Purification Tablets | Water Tank Cleaning | Water Treatment | Drinking Water Disinfection

My old company is the US distributor.
Water Purification, Tank Cleaning
__________________

__________________
Parks Masterson
www.hopkins-carter.com
HopCar is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 11:26 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012