Does anyone have any experience with stainless steel filter guards? I'm currently using a sponge filter, but it takes up a lot of space and also gets grunge-y quite quickly while in my planted tank. I'd like to replace it with something smaller, but also still safe for shrimp fry. I've seen a couple people in the US using stainless steel guards that seem to be made out of really small mesh that then just slides over the intake pipe. They look really nice and easy to maintain. Has anyone used something similar, or know if something similar is sold locally (or even in Canada)? Thanks!