Awesome tank log and hope the iron additions address your issue. If you ever want to increase export further via the refugium, think about a higher wattage LED.@JWsticks thank you for the input .Yes it is. Apex fuge light. I was going over my ATI ICP logs as well as I dose Reef moonshiners program for the last 3 months. One thing that stood out big time is that I have not been dosing enough Iron and Magnanesse daily which most likely slowed / stoped the cheato growth. As growth was off the hook just six weeks ago and has not picked up since last harvest.