One of my silver bala sharks died yesterday, then abother today as we'll as my arowana. I'm gutted and really pissed of and upset. Going ti get some de-chlorine stuff and new fishe and more media as soon as the shops open. Only thing I can think of is nitrate or something. Fish have been off there food though so might be something else. Ps I added a giant gourami the other day if that coud be a cause. Heeeelp