How important is salinity with new liverock?

[uscamaro]

I just got my shipment of liverock like a day and a half early; awesome! The only thing is that I didn't have time to prep my other tank for the early arrival. I'm asking because the salinity is about 1.017. I will be going to Petsmart in a couple of hours but wanted to know if low salinity right off the bat is going to be detrimental.

And it's Fancy fused and Vanuatu liverock, 30lbs of each.

 

[melosu58]

If it`s just LR you`ll be OK. Just when you need to add for evaporation just add SW instead till it gets up there.

 

[ReefBreeder]

Just depends on how much life on the rock you want to keep alive. If its a new tank then the cycle will kill a lot of it. You could keep the salinity the same and just change it slowly over a few days or just change it right away. Either way won't do anything bad I don't think, just alter how long your cycle is.