Good to know! Thanks for all the help everyone! I have been doing 10-15% water changes on the new 20 gallon tank every second-third day and all the serpaes seem pretty happy! My male betta in the 5 gallon is still driving me completely nuts however. He keeps seeing his reflection in the back of the tank and challanging it. I put a background on but somehow he can still see himself and keeps on going. He's completely consumed by the "second" betta... Sigh...