eco23
Aquarium Advice Addict
There must be something to that sand. Also the way you oxygenated in creative areas helped. Plus the fact that the tank sat for quite a while before you started...that would have let some of the beneficial bacteria get into the tank even though it couldn't colonize without ammonia...then again...do you have city water with chloramines? If so, there was ammonia in your tank the whole time. You actually started cycling the day you filled it up with water!