Originally Posted by Hallyx
For you water carriers not gifted with Terror's strength (or taste in cocktails), may I suggest cycling your tank to reduce the number and size of the water changes.
Yes a 2g or 3g tank can accept a stable nitrogen cycle if sufficient filter media and substrate are used.
More importantly, the ammonia is lower at all times than in even a carefully maintained and changed uncycled tank.
Cycling is not for the convenience of the keeper but for the health and safety of the fish.
Cycling anything less than 5 gallons is a pain in the rear. And if put in the inexperienced hands it could do more harm than good. Not to mention you should use a filter and sponge media to cycle the tank.
Id actually recommend some strong and easy to care for plants for those who want to lessen their water changes a bit.