Originally Posted by
Eddie
Nice to meet you and welcome to Simply! It looks like you've got your bases covered. I think with a 90 you can go with 40% twice a week water changes but that all depends on how often you plan to feed and what you plan to feed. If you get fish in the 3.5 range, which I still consider juvies, you will want to feed them well so they grow out large. Hans' fish can get HUGE so make them huge. There is nothing more impressive than a school of giant discus in a large display tank. Honestly, I'd go for more than 6 to start. You have a lot of room to play with and if there is one definite in the discus world, not all fish are created equal. This means that in a group of 6, there will be a fish or 2 that will not grow or develop out like the rest, its just a common fact. Get about 9 or 10 and then get rid of the ones that fall behind. Thats pretty much how I attack it. And you are correct, less is more when it comes to a display tank. The fish are what really set it off.