Hey everyone, I'm new to the forum so please bear with me if this is answered somewhere else. I have been looking for weeks and can not find the answer, so here it is. I set up a 120 gallon tall tank about the first of the year ( perhaps late December 2017). I have a 40 g sump, coral vue ac20287 octopus skimmer, coral base rock, live sand and seeder rock, plus filter media from my 75g in the sump all on startup. I have been testing about once a week and have not seen any spikes, ammonia, nitrite etc. Is it possible that my tank is cycled since levels are zeroed now or more importantly what can I do now?