A fun story, FSI (Fish Scene Investagation)
Here is a story, Told to me from a Guy I knew at a LHS.
A woman comes in to his store. She has never had fish.
She ends up with a 20 gallon setup. Heater, substrate,
Air pump, thermommeter. He tells her about Nitrogen cycle
She takes everything and goes home. She sets up the whole
thing. Goes back after setup to get fish to start cycling the tank.
Comes back in the next day, the fish are dead. Shes brings in a
water sample. Not the problem. She checks the temp. Not the problem.
So, tell me. What was the problem. (he finally went to her house to figure it out)