Mixing artificial saltwater and natural salt water?

[AlanR917]

Hey guys. I am running low on my artificial saltwater mix, and wont get more for a few weeks, would it be harmful to mix artificial saltwater and natural saltwater from petco in the same tank when it is cycling? Nothing is in there but live rock, will this kill the LR?

 

[chichimom79]

The only reason I would worry about it is if I had a lot of sensitive inverts. It will not kill your LR and should be fine, especially since it's a new tank with nothing in it. Just make sure the specific gravity isn't much different

 

[Northstar24]

It shouldn't effect the bacteria on the live rock, but I'd check the pH and salinity to make sure they're close, and get the temperature as close as possible before adding it to the tank as well

 

[AlanR917]

Awesome. Thanks guys!