How to cycle my tank

You can read Daveedka's cycling article here:

http://aquafacts.net/wiki/index.php/Cycling_a_Freshwater_Tank

While you are reading and deciding which way you wish to cycle it, you may want to research your fish a little better. Make sure the fish you want will actually work in a 20g tank. Especially the pleco.

Roan
 
It's better to cycle without fish, because the ammonia and nitrites present in a cycling tank can damage and even kill your fish.

Check out the link Roan supplied, it will answer a lot of questions.
Good luck :)
 
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