Hi betta friends, I`m new to this forum also and will most likely have 1001 questions to ask. I have been keeping tropical fish for a while now (I have a 40 gal) but have never had a betta before until last week, and I`ve already fell in love with him. For the first week, I had him in this very large goblet (2 Gal) but today I moved him into a 10 gal. I put 1 cave hide in it and an open cave swim through for him, along with 8 assorted live plants. When he was in the goblet, he had a pretty good bubble nest going, so I guess he was happy and content. Ok...my first question: I have read so much about filters...need them...dont need them...I`m throughly confused. I understand that they dont like the water flow that a filter brings, but I want him to have clean water. Could you folks give me some advise on this matter? If I do need a filter, which one is best suited for a betta? Thanks for your time and I hope to hear back from some of you good people.