I have a small cuttle fish I am raising (only survivor out of 5) that is still in the breeder net. I was thinking of switching to a picture window fish breeder box (jehmco sells them). But the one thing that worries me is that it has aluminum. Is it safe to use? I've used them with other fish and in tanks with inverts, but I know cephalopods are more sensitive to metals in the water. Has anyone used these before? I'd love to be able to see my little guy a little better!