This is an update on the 90 gallon. Everybody’s doing great and all test results are coming back good on twice weekly water changes (50%). I’m still trying to rehome one discus. So I can stick to the one per 10 gallon rule until they grow larger and pair off. Then I’ll decide which ones I want to keep. I added these two slate rocks for when they do in the future pair off. I have mainly 4 to 5 inchers but a couple 3 inchers who have been in the aquarium for a month but together for two months before the 90 upgrade. Are they even breeding size at five inches? When do discus to decide to pair off? Like years from now? Or months? In proper conditions considered. I figured them blood worms, live black worms and flakes. Also.... does the slate have to be at a slant or would they lay on these rocks?