No my tank is cycled already. My ammonia is at 0 (or atleast <.20 ppm cuz its hard to the colors on my test sometimes) Nitrites have always been at 0. I keep my nitrates <20 ppm. Phosphates are <.25 ppm. I never had any spikes when adding my live rock and transported them home in saltwater to minimize die off. I have a skimmer on order so ive been doing constant PWCs to keep the nitrates low. I also have a puffer and 2 gobies whih have been there for 7 months. i also have green star polyps, eagle eyes, xenias, and a hammer spawn which are all doing weel at the moment. I cycled my tank from fresh to marine for my puffer and finished full marine 6 months ago. i have a crushed coral substrate so i figured that is holding enough bacteria to help seed the LR and keep from mini cycles.