a skimmer is a must. Yes you must feed alot, simply due to the fact unless you have a constant supply of livefood (I have friends that drop 3 bottles of live pods in their tanks every month) most of the food you feed they miss
Good luck with your horses
Incidentally what sites have to gone to for research info? Possibly I or somene else might be able to point out a few extra places..
Reefcentral is not one of them....