Tank too large?

I've kept Betta's in 29 and 40b just fine, probably just his personality that makes him more skittish. When I moved one from a 10 to a 40 he seemed quite happy swimming all over the place exploring it and ate fine.

I was told to keep them in small tanks because it's not as far for them to travel for air. Apparently it isn't true because I've had one living in my 65 for months. Now watch my betta drown for saying this...:naughty:

He's probably still adjusting to the new food. As long as the killis don't eat all the food for themselves, he'll be fine.

I have a Halfmoon DS in a 75 with Mixed Tetra's, guppies and invert, he eats slow but he doesn't seem underfed then again if he get's hungry he just seems to eat the guppy fry that fit in his mouth.

IMO no tank is too big for a betta, I've had one in a 55gal for a couple years and I had one chilling in a 30gal by himself for a while also. If there's a lot of fish in the tank I usually drop a little food in the tank and then once he realizes there's food he'll come to the top and I drop more food above his head. The betta I had in my 55gal just sat it the tall sprite plants and just waited for the food to float above his head. Another thing I've done is sprinkled food in multiple places. I've never had a betta starve nor has one drowned.

Yeah, if a betta can live in slow moving streams a few feet deep with thousands of gallons, then a 40B will definitely be fine. Like stated before, no tank is too large for pretty much any fish.

I put a new female betta in my 29 several days ago, and she's been shy at first but becoming more and more curious about her surrounding. This morning I've seen her swimming out in the open a lot so far, it sometimes takes them a while to acclimate to such a large space after those tiny little cups. It must be heaven for them to suddenly have so much room and space to explore!

i had a betta in one of my 55's for a while. he loved all the space!