I have had the tank for a year but only just recently started adding Coral 2. I have T5 HO with LED about two months old
3. Nitrate: 0
4. Calcium: 448
5. Phosphate: undetectable (Modifed refugium Sump with lots of MacroAlgae- Halameda, Mermaids Fan, Chaitamorpha (sp?), Shaving Brush, and...