Here's my experience. I am currently keeping 6 tamarin wrasses, 2 leopards, and 2 mandarin fish together (and at one point, a diamond goby which has been moved to the 180G), which they all compete for those organisms. All these fish are in my 40-something gallon growout tank. Mine do just fine. I don't have a refugium and I replenish every month with tisbe pods. ALL of my fish, except for mandarins have been weaned onto pellets. Recently, I've been able to wean both my mandarins onto PE mysis. So basically, there is a way to work it out, but just remember, it'll cost you some money and heartbreaks until you've finally find that balance. What worked in my tank may not work in yours and vice versa.