This is our bible for discus. The best version so far. I've been keeping fish as long as you. Discus are not the same, believe me. Young discus will not get to their potential in a tank like your set up. I have 125 gal. 25% WC will not be enough. Also it would be better to grow them out in a smaller tank of their own. https://www.youtube.com/watch?v=VXe3...ature=emb_logo