I say its way to small, discus get really tall, i would say a tank of a min of 90gallons. They need plenty of bogwood and planting. What type are discus do you want? for a good one thats an adult you could be looking at about $150 or so, for a baby about $50, there my prices, you can get crappy little bule ones for like $20 but there ugly, you really need to be ready to spend the bucks. they all hit about 15cm witch is one tall fish!! so you need a tank with about a 50cm hieght. And one thing is the No.1 important thing, discus are a pack fish, like piranhas they need to be with 5 to 9 others. i dont think i have ever heard of a discus living by its self or as two, the more the better.. the only tank mate i can think of is a Black Ghost Knife fish.