R.O water use by date

[alsbeth]

Hi ,can anybody tell me how long R.o water is fit to use ,after its been run off,regenerated and airated etc.
Does it become unusable after so many days ? cheers Alsbeth

[Aquatic_Design]

Alsbeth,
JMO but I would not let it sit for more then a day or two. RO tends to grow bacteria easier then tap water.
Aren't you doing daily water changes?
I use my stored water daily and completely clean the holding tank once a week. I wipe down the container and spray with alcohol and let dry. I then give it a quick rinse and refill with RO.
HTH
Donna

Randal B could give you a more precise answer then mine. ;D

[alsbeth]

Hi Donna,i just wondered,i thought on the same lines as you.A couple of days max. Thanks Alsbeth

[RandalB]

Donna's right
48 Hours max. Nothing in RO water to stop bacteria growth. Gets nasty real quick especially in open containers.

HTH,
RandalB

[Aquatic_Design]

Thanks Randal B. I like it when I'm right. ;D ;D ;D ;D ;D

Donna

P.S. Randal B I love the RO unit. Works great and the price was right.

[korbi_doc]

Hey RandalB, that worries me cuz I've used my 2 RM tubs with heated aerated water for as long as a week. When I was at a horse show, in July, it was pre-pared for 5 days. Then when I went in for my double knee replacements in Dec. my son-in-law changed water in between for me at about 8 days.(imagine the Drs response when I said I had to leave rehab & follow up @ home cuz of FISH?? fortunately it was Xmas week, & the PT's wanted to be off too!) It was the only option I had, & the water was fine & the fish were too!! They were fed once daily with measured Hai Feng, & once with H.froz. BWs. Under normal conditions, I use the water within 3 days, 4 at the most. It takes a full 24 hrs to make enough to do my 2 big tanks, so in my absence, it has to be readied ahead of time. C'est la vie!!!!!! lol, Dottie ;D ;D ;D

[shamsoo]

I am worried too, I empty 35 g holding tank in 4 days :

[Rick_May]

Really, 48 hours? I'm trying to make sense of this. heres my thoughts. RO is pretty much pure, what on earth are the bacteria feeding on?

[RandalB]

Rick,
Bacteria feed on the dust blown in and whatever is left over from the previous batch of water (residue, etc) RO water also has some leftover mineral content. I had a 20H filled with RO water that went cloudy in less than 3 days on me. Brand new tank, Sterilized with bleach and then filled with RO water. I also have to bleach the buckets I carry RO water in weekly as they start smelling.

It all depends on the containers you're storing in, too. A covered container will keep water longer, etc.

The 48 Hours is a RO industry standard for potable (drinking) water without refrigeraton in a non-sterilized container. I quote that to keep things safe for everyone (and keep me from getting sued).
As far as the storage for W/C water, if you haven't had problems in the past, you should be OK with what you are currently doing. So don't worry and clean your storage containers weekly.

HTH,
RandalB