have you been doing tests on the water every few days? have you seent he ammonia rise, then nitrites, then both drop and nitrates rise? You should have some sort of reading on your nitrates or the cycle isn't done. And even if you got your nitrate reading and ammo/trites at 0 i would be adding livestock very slowly and waiting a week or two (or more) to 100% make sure you don't have any problems and the bacteria/algae have reproduced enough to support the bioload your introducing.
And nano, although its a little different between SW and freshwater, your still going through the same bio process of having live bacteria colonies (introduced or in LR/substrate) which starve and die off producing ammonia, which the surviving bacteria feed off of reproducing producing nitrites which other bacteria eat and produce nitrates.
The cycle is still the same in both just using different bacteria, and colonizing different things. =0P