Is fresh prepare salt water needed for water change?

[iamborg]

Hi All,

 

Can anyone please let me know if I can only change water with freshly mixed salt water?

Last time I change about 10% with salt water that was about 10 days old and overnight, I get

a big brown flim everyway.

 

I only have a 12G and the max I change each week is say 2G, I can be mixing 2G a week, it is

easier for me to max like 4-5G at once. thanks

[BKtomodachi]

How are you storing the mixed water? If it is in a dark place and in a sealed container it should be no problem. I do it occasionally.

[iamborg]

I put in 1G plastic water bottle each, with cap sealed. indoor, in the bathroom, out of sunlight.

[StevieT]

is your mixing bucket, power heads, heater etc clean?

[psychochase138]

ive never had a problem with it

[Rome]

I think it should be fine to use as long as it wasnt sitting out without a lid on it. I know if i let my Ro/Di unit sit for a week I always flush it cause you can get stagnant water if it sits to long. If I were you for the future is if you know some made up saltwater was going to sit around for a week to 10 days just have it circulating with a powerhead that way the water wont get stagnant. Just make sure you check salinity cause you will have some evap and may have to add some Ro/Di water to get the salinity right.

[Scott Riemer]

What is the TDS of the water before you mix it with salt?

[iamborg]

Hehe..

 

I was using tap-water then.. No idea with TDS. But my area was supposed to get

the best water in the entire bay area (california).

I did not have extra powerhead or heater, so I use warmer tap water to mix the salt

so that I can get the correct sanlity level.

I am going to use RO now, (not RO/RI) just to be safe.

[Scott Riemer]

Tap water=risk.