What is the easiest breeding surface to use for angelfish? Mine usually use the intake tube of the filter but this makes it tricky to move eggs to another tank, I have to remove the tube from the filter and scrape the eggs off which damages some. Breeding cones are too expensive. Will a piece of tile work? I found a bit which is about 6cm across by 25cm long. If I put the tile standing up in the corner of the tank would they use it?