Apperently he can swim too good, He's not very active so a smaller setting for him is best than such a big tank. Sothat means getting another Betta for that 10 gallon tank instead and that's it.Itwas a quick thing though just to see how he swam in there and is just not working. He's best in a one Gallon tank where he can actually swim and exercise. He can even finally flare and everything. So that meands unduing the wole 10 gallon tank again and going with my orginal idea of 1 gallon per fish sorry guys I tried is for the best. I know my Neon is way more active in his 1 gallon bowl than the 10 gallon tank and he's happier and healthier for it. Is that what counts?