Long story short I have used my skimmer about 6 days out of the 3 months the tank has been up (29 Biocube). As of this week exactly the small hair algae bloom I had has gone away and the last of the cyano seems to be fading daily. Corals are all thriving and growing crazy. I change 5 gallons weekly. I use a phosphate pad just to catch debris where there is no sump but if I have no bad algae, water is clear, and corals thriving, why even run the skimmer unless I have a problem?