Part 1: Nitrification
What do you keep in your tanks? A big school of Tetras? A pair of Cichlids? A few billion bacteria? Don’t gag. The “bugs” are the most numerous things in our tanks and are ultimately responsible for our success if we are to keep our fish alive and healthy. Every solid surface in our tanks has a biofilm on it, of bacteria, algae, etc., composed of whatever type(s) of microorganism that finds that surface and adjacent water conditions hospitable. These bugs are not the enemy or in any way unwelcome. They aid us in the upkeep and function of the micro-ecologies needed to make our tanks stable and safe for our wet pets.