Review on Marine Aqua Aquarium Saltwater Filter by Tiffany Ward

You'd think that for $30 you could get a product that focused on optics and had a glass lens. But in this world of "Shark Tank" products, it all boils down to selling $30 items made for Mfgr. cost 2 dollars. I know it's a specialty product not meant to be sold in the millions. So if they have a customer on the hook, they need to make a 10,000% profit. but damn. Can't you sell a glass optic that costs you $4 for $30? Plastic SCRATCHES and discolours over time. I rate this product with the school grade "D+".