Hey guys. How can you tell if your tank went through its cycle? It's been three weeks since I set up my tank, added nitrifying bacteria, added a dead shrimp to decompose. I haven't gotten an algae bloom or any algae for that matter. I remember on my previous tanks, within a couple of days I would start getting HA everywhere. I'm stumped. All the rock was dead live rock, for the exception of 4 pieces I added to the fuge, I had those four in a trash bin cycling, so any ideas. No I haven't tested my water, reason being I haven't noticed any bacteria. Also my lights on DT have been completely off. Should I turn them on?