The portal is for viewing corals up close, like a magnifying glass, and scraper too. Lol Looks really cool while looking at for awhile. After checking things out for 20 minutes, the coral look real tiny in regular view. I will have to find the catalog where the wife got this from. I really like it. The sun corals are indeed beautiful, and thank you. They haven't opened much lately for there weekly feeding, keeping a sharp eye out on them. The Wifes sun corals spawned and now she has yellow and black baby sun corals in various areas in her tank. Really cool to look for.
Read Joes thread Terri about his gramma. I copper all my new arrivals. I then observe for potential unwanted issues. If there is ich some where unseen to me, the copper will hopefully kill it off in the 5-6 weeks the fish is in there. The tricky thing with copper that I've seen is the pH likes to drop, and drop dramatically. So....... I have to check it daily and sometimes twice a day.
V-dose is Vodka dosing.