I am such an idiot. I thought a sponge filter was a filter that used sponge as the media. I have just found out it is an actual sponge which is the filter. On doing research I kept buying different filters and modifying them to be suitable for a betta. Now I realise I can buy an actual sponge filter. I want to buy one for my betta as I feel it is safer as he is obsessed with my current filter despite it being modified to have almost no flow. What I would like to ask is, how do I go about using a new sponge filter as I am assuming it needs to be cycled? Sorry if this is a stupid question.