I have had a little luck with these 2 species in the past, both are often found in relatively shallow waters in lagoons which usually have high nitrate buildups. So they seem to do better in "dirty"(nutrient rich) water with pretty high light and slack flow, they also very much appreciate regular feeding with some sort of small food such as mysids or even brine.
This is a reason they tend to do poorly in the pristine water that alot of reefers keep in their tanks.