A sad, sad day for FishyFishy

[FishyFishy!]

So I had a massive fish die-off in two of my tanks yesterday. Its the weirdest thing...

I have 3 small tanks right now, and I came home to find all fish dead in 2 of the tanks. All my corals and inverts are doing awesome still. Water perameters are perfect. The only thing that I can think of is that I got a bad batch of Mysis. I know its a long shot, but its the only thing that the two tanks have in common. My third tank that I feed pellets only too was totally fine and normal. I opened the package on Tuesday night, fed the BC29, and the shallow tank that night with Mysis, the BC14 with NLS pellets. Wednesday afternoon, I came home to all fish dead. Not a single one left in the two Mysis tanks...

I lost the following fish, but nothing else! Inverts are fine, corals are looking great...

1 X Maroon Gold Stripe CLown
1 X Flame Angel
1 X Kole Tang
1 X True Perc clown
1 X Tailspot Blenny
1 X Black back Butterfly
1 X Bi-color Dottyback
2 X Black Yellowline Damsels

A sad, sad day for FishyFishy... and an expensive one.