Disinfecting Fresh Water Tank

[Sand D]

I have a HW 296SC 2014. My fresh water tank has "green ick" in it. Do I fill it via the city water hose valve site or the gravity fill hole (with my clorox mix). I did try pouring water with clorox into the gravity fill hole. I looked under the TT and I have no idea where that water went (it was a gallon of water) because it is not in the fresh water tank. I'm not hooked up at the moment.

[ChateauV10]

It depends...Pouring the Clorox/water mix into the gravity fill hole should work. How big is the tank? how much icky water is in it? How do you know it did not work? Were you able to agitate the water in any way? It can take awhile for the Clorox to mix with the rest of the water and then you need to get the water running and stay in the piping to all the fixtures so it can do it's thing.... and then let it stay in several hours...and you may need to do it a couple of times...
Good Luck!

[f5moab]

I would fill the tank about halfway, then drain it to try and get the green stuff out. Then follow the instructions per Forest River (which are similar to most instructions for sanitizing a tank).

When I get mine ready in the spring, I basically fill the tank halfway, then flush out the lines to get rid of the anti-freeze, then fill the hot water tank and then I pull the anode out and let it drain.
Then I follow these instructions from forest river:

Sanitize the system before initial use, after extended periods of non-use, and anytime there is a suspicion that the
system has been contaminated.
To sanitize the system, use the following procedure:
1. Place one once of liquid household bleach (5% sodium hypochlorite solution) in your RV’s fresh water tank, for
each ten gallons of capacity. (If your tank holds 30 gallons, put 3 ounces of bleach in the tank.)
2. With the tank empty and all faucets and drains closed, pour the solution into the fresh water tank.
3. Complete filling the tank with fresh water.
4. Operate the galley (kitchen) pump faucet until water flows freely.
5. Again add fresh water to the tank until the water level reaches the fill spout.
6. Allow the system to stand undisturbed for at least three hours.
7. Drain the system by opening the galley faucet and the supply tank drain cock, while flushing the system with
water of drinking quality.
8. Continue flushing the system, allowing water to flow for several minutes.
9. Close the tank drain valve and the faucet. Refill the system with water of known drinking quality.

I have never used a city water connection, but I believe (pretty darn sure) that bypasses the water tank and is just a straight connection into the water system. I could be wrong since like I said, never used it.

[GalsofEscape]

That one gallon you put in should be in the fresh water tank - my HW had a 20 gallon tank - so only putting in one gallon may not be readily visible. Follow the directions f5moab gave to sanitze your system (and he is correct in that the city water connection does bypass the fresh water tank.)
If you have green ick in it - I would do this whole procedure at least twice (and it would not hurt it to have the bleach solution sit in overnight.

[OldCoot]

Mix the solution to fill the tank to 1/2 and tow the trailer around for about 5 or 10 miles, take it home and finish filling with the solution mix and let set for at least 24 hrs, then drain and start the rinsing process to get rid of the chlorine taste and smell.

[Jim in Halifax]

We do not drink water from tank......When we are in FL for 3 mos +/- I always fill the FR tank to max in case there is a water break down in CG....Use this to flush toilet etc...If unit is in storage in DW at home I also fill the tank to max....A full tank seldom will cause any problems....Carry about 1/3 full when on the road for emerg use...toilet I fall I add some bleach to tank with a little anti freeze over winter and have never had any issues.......J

[f5moab]

Some of use camp where the only water falls from the sky, runs in a river, or is in the water tank.