I've been contemplating changing from fine gravel to round, flat rocks in my 37g tall tank. I have two fancies (Ryukin and Blue Oranda) in there. I noticed that when they are eating their food (sinking pellets) they are picking up gravel too. They spit out the gravel after a bit.
My tank has a kind of an oriental theme to it and I thought flat black rocks (2" diameter) would look nice in it.
Has anyone here tried this? Did it work ok? My concerns are the pellets sinking in between the rocks and the fish not being able to reach them and how can I make sure the rocks are safe to use in an aquarium?
I'd love any advice you can give!