fish-in-cycle

Ok, so I'm setting up a new fish only 105 litre tank. The tank is filled, I've used dry rock but live sand. After quite a bit of research I decided to do a fish-in cycle using ATM colony bacteria. However, when I got to the LFS the assistant said that I need to cycle my tank for 3-4 weeks...

Hello All, I am very new to this hobby and need help in figuring out how to maintain and take care. I have a 17.5 GAL UN Systems aquarium (All in One - Nano Tank), which came with a Sponge and Return Pump. At the aquarium store, I was told about adding nitrifying bacteria on day 1 and can add...