I think Prazi right off the bat is also key. I don't have a ton of experience though. But I am on attempt #10 and 11. About the first 5 (tried a couple from LFS), then a small group from bluezoo that arrived mostly doa except one, and got credit except the one. I tried to get eating healthy first and he died within a week eating well. My next order was 6 all at once, and dosed prazi on day 2 after losing 2 doa's and 2 very shortly after arrival. The remaining 2 are on week 4 I think now. One looks great. The other eats ok live blackworms, brine, and mysis but continues to los weight and swims funny. I started a third dose of prazi yesterday in case he still has some internal worms that survived the first two.
I have them alone, in a qt built for them, with sand and LR loaded with pods. I'm probly throwing in the towel if these last 2 don't make it, but I'm pretty sure I will have at least one. The other guy is iffy at best. Most deaths were DOA or very shortly after. And I match SG to whatever they arrive in when they get here.