Hi! I am looking for advice on filters for my future tank, particularly, in-tank filters. I'm planning a 28 US Gal acrylic hex (clear-for-life brand, 18" x 21"x 20"), which will be a home for freshwater tropicals, starting with my peppered corys. One of the reasons I am super excited to try the acrylic tank is I had a glass tank crack and flood a room many years ago. I strongly want to avoid floods on my ancient wood floors. Also the acrylic hex has kind of a small opening on top which makes it seem like it would be hard to fit a hanging filter on. For those 2 reasons, I am thinking in-tank filter would be ideal, but I have never used anything like that. Are there in-tank filters suitable for 28g? Would they be able to build a good bacterial colony, or not enough air? Would the flow be too strong for neons or other little tetras?