Softies are the worst for excretion of toxins, dz6t. Sanjay's fish are doing great. Check it outFull of softies. That just explain why this tank works. Try to put an acro in it to see how long it can survive.
I have a friend with a tank full of Xenia, he does not do water change. Hack he has no fish because they were all dead. He does not even clean the front glass. Now that is a great success story for you.
Did you see my post regarding Glen F' tank? No water changes since 2004. He keeps LPS, SPS, NPS & softies. Check it out.
There's a couple of great success stories foy you