I couldn't agree with you more... Having a bare bottom tank is fine in my opinion but the debris actually floats more easily as compared to having gravel... I actually have a planted, gravel aquarium for my discus... And they don't really need that big a space... I've seen breeder sized discus housed in 30 gallon aquariums...Ofcourse a bigger tank would be better but not necessarily if you were to house only 2 discus... But if you were to have more, 75 gallons would be ideal...Butterfly said:I have heard that Discus prefer heavily planted tanks so I think the gravel would be better than sand. Plants will grow in sand but not as well.