How long will it last?

[pass1over]

If i premix me up some saltwater for water changes, how long can I store it? Will it ever go "stale" or lose anything?

What about RO/DI water? Since my filter runs irritatingly slow (IMO at least), can I filter up a few buckets of it, put airtight lids on them and store them for later use?

[Iconz]

The sw, you can store for about a month, but you really need a powerhead in there to keep it churned up... The better way is to just store ro/di water in an air-tight container as it keeps longer and doesn't require a ph or anything. Besides, mixing sw takes no time to do.

[pass1over]

does taking like 2 hours to fill a 5 gallon bucket wound right for RO/DI filtration?

ive flushed the membrane for at least 40min today and its still mind-numbingly slow

[Fatman]

Yea sounds very right, most are rated on a PER DAY vs Per Hour that were used to on our pumps.

[melev]

I have a 100gpd unit that I use, and it takes 55 minutes in the summer to make 5g, and 80 minutes in the winter to make the same amount. The reason is due to the water's temperature; the colder it is, the longer it takes.

You can store RO/DI water in a sealed container for months. And I agree about premixed saltwater. One month is long enough unless everything is sterile and you keep the jugs in a cool dark area. Some companies sell water that is boxed up for months, ready to use when you open it.

What RO/DI system do you have?

[dakar]

Also there is a direct correlation to your household water pressure and the performance of your RO unit... The higher the pressure the better performce of the RO (to a reasonable point) as most are raterd with an input presure of 60-90psi. The has been some evidence that a higher input pressure also results in more efficient filtering, less waste water at the RO membrane.

[pass1over]

The brand, im not sure. It was a unit purchased off Ebay. A 5stage aquarium setup.
Ive never heard that the colder the water is, the longer it takes. But that seems right, b/c the water here is colder than all $#%&*#$!!!!

Ok, it seems that im gonna go ahead and filter out a few buckets of RO/DI water so I dont have to wait around for it when I really need it.

Thanks all.