Fish Tank secured cover

Question
Hello, I am working on the design of a marine biology lab for ny high schools. We have been asked to get "secured covers" for all tanks to prevent students from throwing things into the tanks.
I have searched all aquarium vendors but can not find one. Any leads appreciated.

Answer
Dear Frederick,
I have never had to deal with Security aquarium covers so have very little knowledge in that area unfortunately.
I found this website that sells secure covers for aquariums to keep cats, and small children out. But I don't know how effective they are going to be with older students.
"aquariumlandproducts.com/clearcover.html"

I hope this helps a little. What a project! I wish you only the very best with it.

I will continue doing research to further help you...
Best wishes,
Karen~