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Author Topic: Fresh Water Tank Ruined?  (Read 3229 times)
Busnut83
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« Reply #15 on: October 29, 2007, 07:14:03 PM »

Have you ever looked at the water pipes in a house?Huh? Especially an old house??? Same thing...
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captain ron
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« Reply #16 on: October 29, 2007, 07:37:48 PM »

I'm not anal by any means (just ask the proctologist I'm dating) but I'd really hate to have some hot chick come over and after a potty break wash her hands in water that looked like it was pumped right out of the Mississippi. It came out of the faucet orange. I'm building a new cabinet for my tank tomorrow  and then I wont be able to see the rust stains and will be able to relocate my hot water heater on the face of the box. I'm losing 1 whole bay to my WVO conversion (fuel additive system Roll Eyes)so I had to rearrange things and tidy up my installations so every thing is going to look really neat and all space utilized. I'm going through my junk and getting rid of everything I can and soon as I get all this junk out of Bruce's yard I'll take some pictures of what I've done. The "Mechanical bay" will hold my elect. panel, my 2 battery banks 14 batteries in all, my gray water tank, my 55 gallon (for now, will add another smaller tank later), My Pro Heat, my filters for WVO and some shelving for accessory storage.
« Last Edit: October 29, 2007, 08:21:10 PM by Charley Davidson » Logged
Gary LaBombard
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« Reply #17 on: October 29, 2007, 08:26:38 PM »

Pictures, Pictures, who needs pictures taken??
Gary
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captain ron
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« Reply #18 on: October 29, 2007, 08:33:13 PM »

I've got this all figured out now. We can travel together and you can be my opening act and show photographer. and safety adviser  Grin
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gus
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« Reply #19 on: October 29, 2007, 08:49:54 PM »

Charley,

Let's try to keep this simple, plain household vinegar will remove that rust. Just put a couple of gallons in the tank and slosh it around for about 15 min or so. If the stain isn't too high up the tank you can fill it with vinegar up to the rust level.

There may be a vinegar flavor to the water depending on how much you use and how long you leave it there but someone can probably tell you how to kill that flavor. I doubt that there will be much considering how much water the tank holds compared to how much vinegar residue will be left in the tank.

The good thing about this method is that nobody gets poisoned and a small amount of vinegar is actually supposed to be healthful. Household vinegar is mostly water anyway, about 95% as I remember.

Bleach hardly affects rust and it is definitely poision if too concentrated.
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PD4107-152
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Tony LEE
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« Reply #20 on: October 29, 2007, 09:32:56 PM »

"It came out of the faucet orange."

Sounds more like you have an isolated steel fitting somewhere in the system and there was a burst of rusty water came through the system.

I can't see that  rust stains on the inside of the tank could turn the whole tank orange because iron oxide is not all that soluble and in any case is probably "fixed" by all the normal calcium scale that has been deposited there.

Putting a new tank in will make the seller happy but will in any case only solve the problem until you fill it with dodgy groundwater.

One thing with adding chlorine -- from my swimming pool days I seem to remember that where there were iron salts in the water, chlorine caused them to come out of solution and the only remedy was to either use chelating agents or drain the pool.
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captain ron
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« Reply #21 on: October 29, 2007, 09:38:17 PM »

As I stated I do not drink from that tank. If I did it would only be filled at a location I know the water is safe and tastes good or better yet has no taste or smell or color. I like bottled water. But I will try the vinegar tomorrow. I don't even give my dog water from my tank unless it's absolutely necessary.
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captain ron
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« Reply #22 on: October 29, 2007, 09:51:04 PM »

Tony, I drained the tank and saved the last of the water coming out of it and out of a 16 ounce cup after settling it had a good 1/4 inch of orange-ish settimeant in the bottom of the cup. If I saved all of the water out of my system and let it settle I could have filled the cup. The water in HWH was orange and the insides of my PVC pipe has orange stains and my toilet was staining orange every few days. The only metal fittings in my whole system are at the faucets and HWH. And I don't believe that water returns to my tank at least not enough to do that kind of damage.
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Tony LEE
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« Reply #23 on: October 30, 2007, 12:47:49 AM »

Sounds like a lot of rust at that rate. Strange that the water was such that it precipitated out all by itself without the addition of chlorine

The vinegar trick works well in scaled up kettles but it needs to be left overnight to work properly. Cheap and has a gentle action.

 CLR is ACIDIC and will dissolve calcium and rust stains and shouldn't hurt anything in a SS or plastic water tank and will rinse out completely without leaving anything toxic in the tank.
See cautions at http://www.jelmar.com/CLRbasic.htm
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Don4107
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« Reply #24 on: October 30, 2007, 11:04:42 AM »

CLR dissolved the surface of a china bowl that I soaked a show head in.  Did little to help the shower head.  I don't think I would want it in a tank. 

If your tank is coated so are your pipes.  I would go for the vinegar and flush it into the whole system and let it set.  Our town has a well that has a lot of iron in it.  When we had a dishwasher with a plastic lining it became discolored.  Friend said use Tang, you know the old juice drink.  Dug in the back of the cupboard and found some ancient stuff and it worked great.  Suppose it was the citric acid.  No good way to flush it well enough from a tank system. 

Don 4107
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Don 4107 Eastern Washington
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« Reply #25 on: October 30, 2007, 12:19:08 PM »

I'd simply toss a 1/2 gallon of pool acid into your tank and fill it, and let it sit for a few days, then drain and rinse it a few times.  That will remove all minerals and likely the iron.  If any iron is still in there, the same treatment with citric acid will fix it pronto, as citric acid removes iron very efficiently, and diluted to the point that they will be after a good final rinsing, neither of these acids are poisonus.
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Gary
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gus
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« Reply #26 on: October 30, 2007, 02:32:11 PM »

Stick a magnet into the residue at the bottom of your cup and see if it picks up any iron oxide, that will settle the question of whether or not it is iron.

It is true that the vinegar probably needs to stay in the tank longer than I first said but I was afraid it might do some damage if I told you to leave it in overnight. It needs to be watched because the exact time it needs to work properly varies greatly. You can always pour it back in if it isn't in long enough.

I would not recommend pool acid unless it has changed drastically over the years. I think it is hydrochloric acid. I used to use it on severely rusted heavy iron and it removed the rust instantly. The iron was so clean it also began to immediately rust again. The vapors of the acid would also knock you out and any splashed on the skin burned immediately. I stopped using that stuff because I was afraid of it.

You sure don't want to splash any in your eyes!!

Maybe it is greatly diluted now. Vinegar is much, much safer.
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niles500
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« Reply #27 on: October 30, 2007, 09:11:16 PM »

Ron - As far as I've heard - If the hot chick has seen your act and followed you home ..... she's probably not too worried about 'clean hands' - LOL
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« Reply #28 on: October 31, 2007, 02:22:39 AM »

"CLR dissolved the surface of a china bowl that I soaked a show head in.  Did little to help the shower head.  I don't think I would want it in a tank."

Quite likely since these sort of materials - concrete, marble etc -- are in the do-not-use list for CLR.

Normal RV water tanks are made from Stainless steel or fibreglass or polyethylene or similar  - all showing quite good to excellent resistance to mildly to moderately strong acids.
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FloridaCliff
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« Reply #29 on: October 31, 2007, 08:49:20 AM »

Ron - As far as I've heard - If the hot chick has seen your act and followed you home ..... she's probably not too worried about 'clean hands' - LOL

Niles,

I know you have Ron ROFLMAO on that one!

I know I was. Grin

Cliff

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