I've added 2 male guppies to the tank so I dont think that will be too much of an extra load for the filter (I hope). I was wondering though, how often should I be cleaning the filter and how do I do it?
I have a 60litre Tetra AquaArt Tank. Also I now have 4 neons and 2 guppies in the tank, is that my maximum or can I get a couple of more fish, sorry for all the questions.