Help Help Help! Fin Rot?
So Wednesday i changed the Bettas water, and i accidently put them in water to cold. But they seemed fine. And the day after (Thursday) I realized my little one, the very tips of his fins are turning black...black! The person at petco (she actually seemed to know something, said that it was fin rot, and gave me some powder meds to dissolve in the water... is this correct? is there anything else i can do? will he be ok? what would cause this? I spent a sleepless night worrying about him :(