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Old 04-02-2012, 08:26 PM   #1
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How do I get slime from inside the water tank?

I used my camper over the weekend for the first time this year.I ve got some sort of dark slick slimy material in the tank.I was draining the tank and it didnt want to drain with the valve open.I removed the drain valve itself and noticed some slimy material inside the drain valve.Once the drain valve was removed the tank began draining.I have run several gallons of water thru the tank and occasionally small parts of this black gunky looking stuff will ooze out of the low point drain hole.This stuff only appears to be on the bottom of the tank as the bottom of the tank looks darker than the rest of the tank.How do I get this gunk out of the tank? Is there something that will dissolve it? I dont plan on drinking any water from this tank but I would like to use it to wash dishes,possibly to cook with,etc.I did read where I can treat with bleach to kill the organisms but the material in there is slowing down the draining of the tank itself and I would like to get this corrected.
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Old 04-02-2012, 08:37 PM   #2
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I take it you mean the fresh water tank has dark slimey stuff in it

this is what I would do - this maybe the right or wrong idea but each person has a way of doing stuff.

My suggestion is to remove the house water filter and fill the tank with bleach (maybe 1/2 gallon) and the rest water and let it sit for a few days to dissolve the slime and then flush it out real good multipele times and see what you have in the tank at that point.

I would not run any of this thru the camper so you will need to use the low point drain to drain it out - if this help or doesnt work then my suggestion to either get a new tank installed or have the tank removed and cleaned with a pressure washer or something that will put some pressure in the tank to clean it out good.
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Old 04-02-2012, 10:15 PM   #3
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That's a lot of bleach and I'd imagine that should just about kill any slime and algae growing in that tank. The only thing you might want to do is to fill up the tank only half way and drive around for a bit to let it slosh around. Then fill up the rest of the way and let it sit. Hopefully it drains out afterwards.

Depending on how much slime, you might need to eventually drop that tank to get the stuff out.
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Old 04-02-2012, 10:28 PM   #4
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Quote:
Originally Posted by Triguy View Post
That's a lot of bleach and I'd imagine that should just about kill any slime and algae growing in that tank. The only thing you might want to do is to fill up the tank only half way and drive around for a bit to let it slosh around. Then fill up the rest of the way and let it sit. Hopefully it drains out afterwards.

Depending on how much slime, you might need to eventually drop that tank to get the stuff out.
if he has alot of green in the bottom as suggested - I would want to kill it good
He could always get some liqued pool chlorine as well from a pool store but not sure what it would do the side of the camper if he spilled it versus what the bleach would do.

good idea on driving around a bit to allow it to slosh around
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Old 04-02-2012, 10:49 PM   #5
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Definitely want to kill it!

I wonder how this was caused? David, can you tell us how long the water was in the tank and was it well-water or chlorinated city water? Just curious.
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Old 04-03-2012, 12:46 AM   #6
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Definitely want to kill it!

I wonder how this was caused? David, can you tell us how long the water was in the tank and was it well-water or chlorinated city water? Just curious.
I bought the camper new in late October of 2011.It was winterized at the dealer at the time I picked it up and I did not use the water system the one trip I had it out last year.Afterwards it was kept parked in my garage over winter.I used the camper this past weekend but once again did not use the water system.I did open the valve to drain it but very little came out.When I returned home I saw where I could actually remove the entire drain valve which I did.Upon examining the removed valve I noticed a slimy material in the drain valve opening so I removed it.I could see a little black material on the ground where the water drained out and could see some black particles through the hole that I removed the drain valve from near the bottom of the tank.I actually drove about a 170 or so miles this past weekend with the camper but I am not sure how much water was actually in the tank since I got back and then added more water to see if that would help in draining.The bottom of the tank still looks darker than the rest of it. Most of the water coming through the tank now is very clear however the bottom of the tank still looks darker than the rest of the tank and some slimy gelatin-like material occasionally hangs up near the drain hole and slows the drainage down.
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Old 04-03-2012, 01:14 AM   #7
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I would suggest getting some nice, hot water to put in with the bleach. There's nothing more convincing to stubborn water issues than some steaming hot water! Good luck with it.
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Old 04-03-2012, 01:47 AM   #8
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1/2 cup of bleach
into 3/4 full water tank


then
Quote:
Originally Posted by Triguy View Post

drive around for a bit to let it slosh around

then
let it sit for 24 hrs
and drain

from now on when storing
put 1 tablespoon bleach into water tank
that small amount
will keep THINGS clean for a while
longer periods require more

not rocket science
but
I test and treat well waters
Equip Tec for AAAA Pump Co

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Old 04-03-2012, 08:56 AM   #9
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I think the concentration numbers are 1/4 cup of bleach to every 15 gallons of water, so a 30 gallon fresh water tank should take 1/2 cup of bleach.

I would be afraid that too much bleach concentration could damage the tank......a 1/2 gallon of bleach in a 30 gallon tank is a right high concentration.

I always drive my trailer around after adding the bleach and filling the tank with water to get it to slosh on the upper portions of the tank.
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Old 04-03-2012, 09:07 AM   #10
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Quote:
Originally Posted by DavidnLondon

I bought the camper new in late October of 2011.It was winterized at the dealer at the time I picked it up and I did not use the water system the one trip I had it out last year.Afterwards it was kept parked in my garage over winter.I used the camper this past weekend but once again did not use the water system.I did open the valve to drain it but very little came out.When I returned home I saw where I could actually remove the entire drain valve which I did.Upon examining the removed valve I noticed a slimy material in the drain valve opening so I removed it.I could see a little black material on the ground where the water drained out and could see some black particles through the hole that I removed the drain valve from near the bottom of the tank.I actually drove about a 170 or so miles this past weekend with the camper but I am not sure how much water was actually in the tank since I got back and then added more water to see if that would help in draining.The bottom of the tank still looks darker than the rest of it. Most of the water coming through the tank now is very clear however the bottom of the tank still looks darker than the rest of the tank and some slimy gelatin-like material occasionally hangs up near the drain hole and slows the drainage down.
I wonder if the dealer drained the tank of enough water? A bit of water in there over the winter won't hurt if it freezes but it could become a breeding ground when it warms up; especially if the water was not chlorinated.

Since I use well water both at my home and at the state parks we visit, I try to drain the tank between trips. I like Mountainman's recommendation to add a Tbsp of bleach between trips.
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