I have up graded my blue male betta to a 3 gal.eclipse filtered tank.I used tap water and the ph.is 7.6 i tried to lower it but it will not come down,and now his top fin is curling at the tip,and he has some red coloring on his fins is this o.k.? all so how can you tell if bettas are stressed? i have read the current from a filtered tank can stress the fish.he's swimming like crazy.thank-you.