- Dec 4, 2017
I have a koi halfmoon betta in a 2.5 gallon tank. I've had him for about 4 months now, and only recently moved him into this tank. Well for one the flow of the tank is pretty strong. Any suggestions on slowing the flow? The intake of the filter also seems to be pretty strong... I just turned it off so he can relax a bit. Other than the filter, he just randomly flares and twitches, and occasionally scratches his right side on the piece of wood I have in there. I looked at him from every angle... No parasites or anything on him, just a small gash from scratching up against the wood.