I recently posted about a DIY tank divider I made. Although it works well, I realize I need a more permanent solution since it does have a lot of small holes the fry can escape through. I went to my local fish store and they didn’t have a tank divider for my sized aquarium(75-gallon). Ordering from Amazon would take too long. I found this material that is at my local Walmart and looks like a net (I went to buy some soft small net material but couldn't find any anywhere). Would this be fish-safe? I've never worked with it before so any pointers would help. If there is a better net-like material please tell me! I just have to make sure it's really fine so that my angelfish fry can't swim through it.