We have a 96lt tank...we are new to this hobby so apologies in advance if anything doesn't makes sense!
It's being a week with the Tank, no livestock in it yet...just the Live rocks (pictures below)...
This morning they appear with a white "thing" around...looks like mold but I've been reading and it says it can be a sponge?
The question is: Is this normal? should we do something different?
As well, we are using tap water + red sea salt...is this ok?