Ya, feeding is the key, well that and keeping the temp consistent and preferably below 75 degrees
The display mangrove fuge that I am building with my big tank, will eventually be seahorses. Several years from that though as they will be one of the last things I stock in it, once I start that phase. The fuge is an 85g long which will have mangroves and other macros. Flow will be slow, to moderate, and I am planning on growing my own pods, and dosing them on a constant basis, along with phyto