Any suggestions on a HOB skimmer for a 47 bow. I dont have enough room inside my sump (mud filter) for placing so must be a hang on skimmer. What has given you best results? I have clams, soft corals, sps and everything is thriving. Need to add good skimmer to ensure as my corals contine to grow I remove as much junk as possible. What is the best from past experience. Thank you