Hello everyone, I've just got the 90 gallon running - established media & 10-15% of the water came out of my established system (2+yrs old). It'll be a Discus based biotope - I've used pool filter sand as the substrate and got various drift wood flipped on its top. I'll post some pictures soon. Anyways, before I keep talking irrelevantly, my question is if anyone has every kept Discus with Angelfish and how that went? I have owned virtually every fish successfully in the freshwater (just got into saltwater for about a year now), except Discus believe it or not. I had two Discus for a very short time because a friend of mine had to get rid of them. They weren't suited to the tank at the time & I knew my LFS would take them in so they had been in my tank for a short while. Other than their compatibility, I've tried the rummynose/cardinal thing many times with Angels and Rams/Geos as well in two separate setups. I wanted something different. The only fish I haven't owned which seem so interesting & love how they school is tiger barbs. I know right away that they've been known to nip and disrupt peaceful fish like the Discus, but in a 90 gallon tank would it be that bad? I'm finding it difficult to believe how incredibly sensitive Discus fish are. Has anyone tried and tested in a similar sized tank?