Originally Posted by tazman19
What is the deal with filters? As you can see, I am using the Whisper that came with my 3 gallon tank setup. I hear that bettas dont necessarily like ANY current. Otis seems to have fun though sometimes swimming against the current then back again on the right side of the tank.
Also, is sand or gravel preferable?
As for filters, there are some that are adjustable. And you can always add some sponge into the cartridge area to help muffle the flow. Some betta enjoy it, my CT's have, and my VT too. But betta with more tail (long VT's, HM's, Deltas) have a harder time with current because it's the equivalent of having sails full of wind on a boat.
But each betta is different =)