So I was looking into getting a shark, specify a marbled cat shark. And I read in multiple places that often in aquariums they fall short in needed vitamins. So to help with this people give them supplements in their food. My question is for one how necessary is this and where some good places to find them are, or if there's any you guys use and like? The only ones I've seen are the mazuri tablets which I've heard are really good but I want to look at other options too. I've also heard someone talk about liquid ones for sharks and was wondering if anyone knew where to find that?