I own a fishless tank, justs cuc and softies.
6 months after i started i think it's not simply easier, there is much less information on the internet than standard reef tanks.
I have been fighting against cyano because my no3 were absolute zero, then began to add kno3 and now it seems to be stabilized, no algae, lots of copepods, worms, little snails.
At this time the problem for me is coral growth... only my sarcophiton seems to grow so im trying with grotech abcm... we'll see..
Its fun for me, i do not need fish. Little critters are really interesting too, if not more interesenting than fishes.
I'd like there were more people sharing info about fishless tanks...
(sorry, my english is not good...)