frozen food

[alexk3954]

Will frozen food ever spoil and be harmful to fish? I also have a 125 gal. planted FW aquarium and recently switched from frozen blood worms to brine shrimp. A lot of my fish randomly died, even though water parameters were perfect. Could the food maybe have thawed and been refrozen, causing it to spoil? Was it maybe infected with parasites? Could parasites live in my aquarium and kill all of my fish? I am concerned because once I start stocking my reef, I don't want to lose expensive fish because of something stupid like frozen food. What do you guys think was the reason my fish died?

 

[bertoni]

Thawed and refrozen food might cause problems. Parasites are less likely, since I suspect they wouldn't survive being frozen. Since it's freshwater you're asking about, I can't help more.