I think the color is not coming in as clear from the photo, as well as the lighting. I wanted to share my qt method and encourage feedback. The tank is 20 gal plexiglass with an overflow (to drain) at around 11 inches. This provides about 13.5 gallons. There in one piece of live rock with algae on it as well as heater, sponge filter and pic for hiding spot. My main display has automated water change of 7 gallons a day. Instead of this water going to drain, it is redirected into the QT, so it gets approx 50% fresh water each day. I check the salinity daily and add about 1/2 cup rodi. I have not decided whether to use any medicine "just in case". Please provide recommendations.