I'm a newbie to fresh, converted from saltwater. I have a 40 gallon breeder right now, it is cycled with 3 neons in it. I plan on doing a south american type tank. There are no live plants, ph is around 7. Low trates. I need a bottom feeder to clean up after my other fish who miss some flakes and other foods. I don't really like cories. I was thinking maybe a couple of banjo cats maybe? I am planning on having angels also. Any suggestions for good bottom feeders would be great?