I agree with the previous posts linking cyano to low PO4 NO3. Yes, every tank is different, and the same tank is different at different ages.
I will offer the same advice that was given to me when my NO3 and PO4 were largely undetectable by RedSea and Hanna. It was simple, and allowed my acropora to color up (my goal at the time).
Start gradually increasing your feeding. Add another fish or two over the next month. Go slow. After a couple months if you're still low (<5 NO3 and <.03PO4) then put your skimmer and/or reactors on a timer and scale them back. Go slow. Test every 3-5 days. (You could reverse the order, but I would not do them all at the same time.)
I found this easier and more intuitive to accomplish than dosing Nitrate/PO4. Fewer moving parts.
I will offer the same advice that was given to me when my NO3 and PO4 were largely undetectable by RedSea and Hanna. It was simple, and allowed my acropora to color up (my goal at the time).
Start gradually increasing your feeding. Add another fish or two over the next month. Go slow. After a couple months if you're still low (<5 NO3 and <.03PO4) then put your skimmer and/or reactors on a timer and scale them back. Go slow. Test every 3-5 days. (You could reverse the order, but I would not do them all at the same time.)
I found this easier and more intuitive to accomplish than dosing Nitrate/PO4. Fewer moving parts.