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19-08-2008, 07:06
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#1
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Registered User
Join Date: Jul 2008
Posts: 2
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How to get chemical taste out of new black water tanks.
We are getting ready to leave Capetown with a new Admiral 40 sailing cat. The potable water from the tanks has a VERY strong chemical taste. Any ideas on treatment to get rid of or at least reduce this taste?
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19-08-2008, 07:22
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#2
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Registered User
Join Date: Aug 2008
Location: Slovenia not Slovakia; gulf of Triest
Boat: owned a 6m single hull sailing boat, a HIRONDELL 23 cat and chartered modern +8m ELAN boats
Posts: 79
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vitamin dissolving tablets?
__________________
Rosso di sera, bel tempo si spera. Rosso di mattina, mal tempo si avvicina
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19-08-2008, 21:51
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#3
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Registered User
Join Date: Jun 2008
Location: chesapeake bay
Boat: 83 27' hunter "SALTY DAWG"
Posts: 129
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some bleach, rinse, then a bunch of baking sode dumped in thru the inspection port fill let sit then drain and rinse.
or a britta filter for drinking water
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20-08-2008, 01:51
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#4
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Registered User
Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
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Dont Black Water tanks have No1 and No2's in them?
I dont think I'd drink from them and I have no doubt the taste would be shitty
(Oh, I see, they are new and they are black)
Dave
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20-08-2008, 06:39
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#5
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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Uncured Tank Coating?
I would suggest you check with the maker to see what they lined the tanks with. In the past, iron tanks used to be coated with a thin morter. Now some builder's seem to put a two part coating on the inside of water tanks and it soulds like yours may have been so treated but the coating hasn't kicked off properly. If so and if the water you're adding to the tanks has chlorine in it, the coating may never cure properly. I sure as heck wouldn't settle for tanks that fouled the water.
s/v HyLyte
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"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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20-08-2008, 14:10
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#6
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Registered User
Join Date: Sep 2007
Location: Colombo
Posts: 1,059
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We had the same problem - in our case with a food certified grade of epoxy lining steel tanks. It was very strong and even using the water for showering one came out smelling like Chemical Ali.
The paint manufacturer, who supplies a lot of food grade epoxies to the food processing industry, was at a loss as to why it had occured and suggested mainly just flushing but to try baking soda, and claimed the taste would disappear.
In our case baking soda (and they suggested some other household thing as well which I have forgotten now) didn't make any difference but as the manufacturer said it would the taste and smell soon disappeared with flushing. I just filled the tanks, let it sit a day or so and pumped it out, repeating for about a week or so I think it took.
I assume that your tanks are frp so your experience may differ.
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20-08-2008, 16:03
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#7
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Registered User
Join Date: Jul 2008
Posts: 2
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Thanks
Thanks for all the help. Maybe we'll try all of the above!
Crew of SV Options
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20-08-2008, 16:28
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#8
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Moderator Emeritus
Join Date: Sep 2007
Location: Eastern Tennessee
Boat: Research vessel for a university, retired now.
Posts: 10,406
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First, are you certain your tank is intended for potable water? The only thing I can think of that already has not been mentioned is to keep cycling the water in the tank. Eventually it should go away if the tank was intended for potable water.
__________________
David
Life begins where land ends.
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20-08-2008, 23:39
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#9
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Registered User
Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 7,141
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Quote:
Originally Posted by cat man do
Dont Black Water tanks have No1 and No2's in them?
I dont think I'd drink from them and I have no doubt the taste would be shitty
(Oh, I see, they are new and they are black)
Dave
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That was my first impression as well.
Great minds think alike!
Steve B.
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21-08-2008, 19:44
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#10
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Eternal Member
Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
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Who made the tank?
I have never seen a Black Plastic Water Tank
Fuel...Yes
BTW I don't DRINK anybody's boat water....even my own
As a pain in the keester it is I only drink bottled water
or water from gallon jugs......Boat water is last resort
My innards thank me for it
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21-08-2008, 19:53
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#11
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Registered User
Join Date: Sep 2007
Location: Colombo
Posts: 1,059
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Black food grade polyethylene tanks are super common for potable water storage. They are pigmented black to inhibit light induced growth of organisms in the water.
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21-08-2008, 20:03
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#12
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Eternal Member
Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
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Here in the States
about all we see are white Todd tanks.
Quote:
Originally Posted by MidLandOne
Black food grade polyethylene tanks are super common for potable water storage. They are pigmented black to inhibit light induced growth of organisms in the water.
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21-08-2008, 22:40
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#13
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Registered User
Join Date: Mar 2003
Location: Philippines in the winters
Boat: It’s in French Polynesia now
Posts: 11,368
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Black tanks????
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
The measure of a man is how he navigates to a proper shore in the midst of a storm!
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22-08-2008, 02:36
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#14
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Registered User
Join Date: Sep 2007
Location: Colombo
Posts: 1,059
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Quote:
Originally Posted by delmarrey
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Ronco, who you link to, do all their water tanks in black if wanted - have a look in their catalogue.
A quick google gives an endless list of USA manufacturers of tanks in black polyethylene for potable water.
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22-08-2008, 07:28
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#15
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֍֎֍֎֍֎֍֎֍֎
Join Date: Apr 2006
Posts: 15,136
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I suspect we normally use the white translucent poly tanks in the US, because it is easier to inspect them. Any type of mold or growth on a black surface would be hard to see--but on a white one, it stands right out.
db, you can add an activated charcoal (carbon) water filter at the tap and that should go a long way to removing the chemical content and flavor. Some screw right into the faucet tap, others install in the plumbing line, and of course you can use a "Britta" or similar brand pitcher with the carbon filter in it--no installation required.[g]
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