Noob needs help/tip with live rock

[Otardifus]

I think your live rock will still do the job it just might take longer to cycle.
Keep an eye on your levels.
Look for pods in your live rock. If your tank is not full of 1000's of pods after a month or so you should consider trading sum live rock from an established tank. sum stores sell premium live rock.
so as a noob my advice to you is don't forget about the pods! and at 5 deg celcius I think most would have died but it is easy and fast to reseed pods back into a tank. my favorite way is to get a chaeto plant ball put it in your tank for a few hours (or days) then remove it the pods will transfer to live rock.
now you gotta ask your self the question: to have sand or not to have sand !
I hope you have lots of fun in you new hobby and the people here at canreef are an excellent knowledge pool just keep asking