My 55 gallon reef is going really good. I am now thinking about a nano reef. See many members doing them. Was looking at the Waterbox 20. Confused about the skimmer, do I want one or can I do without?
Welcome to R2R!! As @reef lover stated, it is not necessary to run a skimmer but it does help maintain nutrient levels. I run a mini refugium in my 16 gallon Biocube, and occasionally I add a bag of carbon and zeolite to the mix if I am getting too much algae film algae in my glass. But I do not have a skimmer setup. And judging by how my euphyllias still refuse to grow new heads, my nutrient levels are super low (which tests always seem to back up).