Old Rotifers and Reef food

[bimmer01]

Hello,

I have 2 bags of old Rotifers and active sphere reef food without an expiration date. It is similar to zooplanktons. I believe they are from 2011. Is it safe to feed my corals and fish with this? Or will my phosphates spike up?

Any help is appreciated.

Sent from my SM-G955U using Tapatalk

 

[der_wille_zur_macht]

Brine shrimp direct are a great vendor. I'd reach out and ask them.