I presently have two reef's. My main system is 13yrs old and I have a great skimmer on it. My question goes for my 65 gal hex. It's been up for 3 years now but I need to add skimmer. I don't have a sump on this set-up. I'm looking for feedback on piggy back skimmers, or something that I can use effectively without adding a sump. I'm limited on space with this set-up. Any good idea's are appreciated.
Bill
Bill