it can take weeks . After the inital cycle you will begin to find things and years later you will find things and wondering where did that come from I havent added any thing new ..When I set up my first tank I could not see a hitchiker for miles it seemed to take months then wam there they were ...
As for cycling that depends on how you do it .. it may well only take a week but it is not likely as there will be some die off from the transport of the LR
Your cycle will look some what like this
Ammonia will rise and fall ~ should be 0 Very toxic to fish and inverts can cause burns on the gills making it hard to breath
NitrItes will rise and fall ~ should be 0 Ammonia converts to NitrItes also quite toxic to fish can cause burns an making it hard to breath
NitrAtes will rise and fall ~ would like to see lower than 15-20 espec if you want a reef , NitrItes convert to NitrAtes , less toxic than above shoot for a level less than 15-20 Optimal is 0 but rarely do we see that in the home system